Optical imaging lens assembly, image capturing unit and electronic device

ABSTRACT

An optical imaging lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The second lens element has positive refractive power. The third lens element has positive refractive power. The fourth lens element has positive refractive power. The fifth lens element has positive refractive power. The sixth lens element has an image-side surface being concave in a paraxial region thereof, wherein the image-side surface of the sixth lens element has at least one inflection point. The optical imaging lens assembly has a total of six lens elements.

RELATED APPLICATIONS

This application is a continuation patent application of U.S.application Ser. No. 15/960,026, filed on Apr. 23, 2018, which is acontinuation patent application of U.S. application Ser. No. 15/096,967,filed on Apr. 12, 2016, which claims priority to Taiwan Application105102089, filed on Jan. 22, 2016, which is incorporated by referenceherein in its entirety.

BACKGROUND Technical Field

The present disclosure relates to an optical imaging lens assembly, animage capturing unit and an electronic device, more particularly to anoptical imaging lens assembly and an image capturing unit applicable toan electronic device.

Description of Related Art

In recent years, with the popularity of electronic devices having camerafunctionalities, the demand of miniaturized optical systems has beenincreasing. As the advanced semiconductor manufacturing technologieshave reduced the pixel size of sensors, and compact optical systems havegradually evolved toward the field of higher megapixels, there is anincreasing demand for compact optical systems featuring better imagequality.

The optical systems have been widely applied to different kinds ofelectronic devices, such as smartphones, wearable devices, tabletpersonal computers, dashboard cameras, aerial photographic cameras andimage recognition systems, for various requirements. However, theconventional compact optical system is unable to satisfy therequirements of wide field of view and high image resolutionsimultaneously. Thus, there is a need to develop an optical systemfeaturing a wide view angle with high image resolution.

SUMMARY

According to one aspect of the present disclosure, an optical imaginglens assembly includes, in order from an object side to an image side, afirst lens element, a second lens element, a third lens element, afourth lens element, a fifth lens element and a sixth lens element. Thesecond lens element has positive refractive power. The third lenselement has positive refractive power. The fourth lens element haspositive refractive power. The fifth lens element has positiverefractive power. The sixth lens element has an image-side surface beingconcave in a paraxial region thereof, wherein the image-side surface ofthe sixth lens element has at least one inflection point. The opticalimaging lens assembly has a total of six lens elements, and the opticalimaging lens assembly further includes an aperture stop. When an axialdistance between the aperture stop and the image-side surface of thesixth lens element is SD, an axial distance between an object-sidesurface of the first lens element and the image-side surface of thesixth lens element is TD, the following condition is satisfied:

0.65<SD/TD.

According to another aspect of the present disclosure, an imagecapturing unit includes the aforementioned optical imaging lens assemblyand an image sensor, wherein the image sensor is disposed on an imagesurface of the optical imaging lens assembly.

According to still another aspect of the present disclosure, anelectronic device includes the aforementioned image capturing unit.

According to yet still another aspect of the present disclosure, anoptical imaging lens assembly includes, in order from an object side toan image side, a first lens element, a second lens element, a third lenselement, a fourth lens element, a fifth lens element and a sixth lenselement. The second lens element has positive refractive power. Thethird lens element has positive refractive power. The fourth lenselement has positive refractive power. The fifth lens element haspositive refractive power. The sixth lens element has an image-sidesurface being concave in a paraxial region thereof, wherein theimage-side surface of the sixth lens element has at least one inflectionpoint. The optical imaging lens assembly has a total of six lenselements, and each of the lens elements of the optical imaging lensassembly is a single and non-cemented lens element. When a focal lengthof the optical imaging lens assembly is f, an axial distance between anobject-side surface of the first lens element and an image surface isTL, the following condition is satisfied:

0.70<TL/f<2.85.

BRIEF DESCRIPTION OF THE DRAWINGS

The disclosure can be better understood by reading the followingdetailed description of the embodiments, with reference made to theaccompanying drawings as follows:

FIG. 1 is a schematic view of an image capturing unit according to the1st embodiment of the present disclosure;

FIG. 2 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 1stembodiment;

FIG. 3 is a schematic view of an image capturing unit according to the2nd embodiment of the present disclosure;

FIG. 4 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 2ndembodiment;

FIG. 5 is a schematic view of an image capturing unit according to the3rd embodiment of the present disclosure;

FIG. 6 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 3rdembodiment;

FIG. 7 is a schematic view of an image capturing unit according to the4th embodiment of the present disclosure;

FIG. 8 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 4thembodiment;

FIG. 9 is a schematic view of an image capturing unit according to the5th embodiment of the present disclosure;

FIG. 10 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 5thembodiment;

FIG. 11 is a schematic view of an image capturing unit according to the6th embodiment of the present disclosure;

FIG. 12 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 6thembodiment;

FIG. 13 is a schematic view of an image capturing unit according to the7th embodiment of the present disclosure;

FIG. 14 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 7thembodiment;

FIG. 15 is a schematic view of an image capturing unit according to the8th embodiment of the present disclosure;

FIG. 16 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 8thembodiment;

FIG. 17 is a schematic view of an image capturing unit according to the9th embodiment of the present disclosure;

FIG. 18 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 9thembodiment;

FIG. 19 is a schematic view of an image capturing unit according to the10th embodiment of the present disclosure;

FIG. 20 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 10thembodiment;

FIG. 21 is a schematic view of an image capturing unit according to the11th embodiment of the present disclosure;

FIG. 22 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 11thembodiment;

FIG. 23 is a schematic view of an image capturing unit according to the12th embodiment of the present disclosure;

FIG. 24 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 12thembodiment;

FIG. 25 shows a schematic view of the parameters Y11, Y62 and Yc62according to the 1st embodiment of the present disclosure;

FIG. 26 shows an electronic device according to one embodiment;

FIG. 27 shows an electronic device according to another embodiment;

FIG. 28 shows an electronic device according to still anotherembodiment; and

FIG. 29 shows an electronic device according to yet still anotherembodiment.

DETAILED DESCRIPTION

An optical imaging lens assembly includes, in order from an object sideto an image side, a first lens element, a second lens element, a thirdlens element, a fourth lens element, a fifth lens element and a sixthlens element. The optical imaging lens assembly has a total of six lenselements.

There can be an air gap in a paraxial region between every two lenselements of the optical imaging lens assembly that are adjacent to eachother; that is, each of the first through the sixth lens elements can bea single and non-cemented lens element. Moreover, the manufacturingprocess of the cemented lenses is more complex than the non-cementedlenses. In particular, an image-side surface of one lens element and anobject-side surface of the following lens element need to have accuratecurvature to ensure these two lens elements will be highly cemented.However, during the cementing process, those two lens elements might notbe highly cemented due to displacement and it is thereby not favorablefor the image quality. Therefore, there can be an air gap in a paraxialregion between every two lens elements of the optical imaging lensassembly that are adjacent to each other in the present disclosure forsolving the problem generated by the cemented lens elements.

The first lens element has an object-side surface and an image-sidesurface, wherein at least one of the object-side surface and theimage-side surface of the first lens element can have at least oneinflection point. Therefore, it is favorable for correcting aberrationsat the off-axis region.

The second lens element with positive refractive power can have anobject-side surface being convex in a paraxial region thereof.Therefore, it is favorable for providing sufficient capability toconverge the incident light on the object side so as to reduce a totaltrack length, thereby maintaining a compact size thereof.

The third lens element with positive refractive power has an object-sidesurface and an image-side surface, wherein at least one of theobject-side surface and the image-side surface of the third lens elementcan have at least one inflection point. Therefore, the third lenselement arranged with the second lens element is favorable for balancingthe light converging capability of the lens elements on the object sideso as to prevent excessive aberrations generated by any single lenselement of the optical imaging lens assembly having overly strongrefractive power.

The fourth lens element with positive refractive power can have anobject-side surface being concave in a paraxial region thereof and animage-side surface being convex in a paraxial region thereof. Therefore,it is favorable for being more symmetrical with the third lens elementso as to correct aberrations.

The fifth lens element with positive refractive power can have anobject-side surface being concave in a paraxial region thereof and animage-side surface being convex in a paraxial region thereof. Therefore,it is favorable for the lens configuration of the optical imaging lensassembly with better symmetry so as to reduce the sensitivity.

The sixth lens element can have negative refractive power; therefore, itis favorable for correcting Petzval sum so as to improve the flatness ofthe image surface. Furthermore, the sixth lens element can have animage-side surface being concave in a paraxial region thereof;therefore, it is favorable for moving the principal point of the opticalimaging lens assembly towards the object side so as to reduce a backfocal length, thereby further reducing the total track length. Moreover,the image-side surface of the sixth lens element has at least oneinflection point; therefore, it is favorable for further correctingaberrations at the off-axis region.

The optical imaging lens assembly can include an aperture stop. When anaxial distance between the aperture stop and the image-side surface ofthe sixth lens element is SD, an axial distance between the object-sidesurface of the first lens element and the image-side surface of thesixth lens element is TD, the following condition can be satisfied:0.65<SD/TD. Therefore, it is favorable for the placement of the aperturestop so as to control the direction of the light path effectively,thereby providing sufficient field of view and image height.

When a focal length of the optical imaging lens assembly is f, an axialdistance between the object-side surface of the first lens element andan image surface is TL, the following condition can be satisfied:0.70<TL/f<2.85. Therefore, it is favorable for providing a wider fieldof view and keeping the optical imaging lens assembly compact.Preferably, the following condition can also be satisfied:0.70<TL/f<2.45. More preferably, the following condition can also besatisfied: 0.70<TL/f≤1.66.

When half of a maximal field of view of the optical imaging lensassembly is HFOV, the following condition can be satisfied:0.70<tan(HFOV)<0.98. Therefore, it is favorable for enlarging an imagingarea of the optical imaging lens assembly and correcting distortion.

When a curvature radius of the image-side surface of the fifth lenselement is R10, a curvature radius of an object-side surface of thesixth lens element is R11, the following conditions can be satisfied:−0.95<R10/R11<0.85. Therefore, it is favorable for properly arrangingthe lens shapes so as to provide a better optimized lens configuration.

When a focal length of the first lens element is f1, a focal length ofthe fourth lens element is f4, the following condition can be satisfied:−0.80<f4/f1. Therefore, it is favorable for properly arranging therefractive power distribution of the optical imaging lens assembly so asto prevent severe aberrations on the object side.

When the focal length of the first lens element is f1, a focal length ofthe sixth lens element is f6, the following condition can be satisfied:−5.0<f6/f1<0.50. Therefore, it is favorable for balancing the refractivepower distribution between the object side and the image side so as toenhance the capability to optimize the optical characteristics on theimage side, thereby improving the image quality.

When a curvature radius of the object-side surface of the fourth lenselement is R7, a curvature radius of the image-side surface of thefourth lens element is R8, the following condition can be satisfied:0<(R7+R8)/(R7−R8)<5.0. Therefore, it is favorable for preventing thesurfaces of the fourth lens element from overly curved and relatedmolding problems, thereby increasing the manufacturing yield rate.

When a focal length of the second lens element is f2, a focal length ofthe third lens element is f3, the following condition can be satisfied:0<f2/f3<1.50. Therefore, it is favorable for optimizing the opticalcharacteristics of the second lens element so as to maintain a compactsize thereof.

When a central thickness of the first lens element is CT1, an axialdistance between the first lens element and the second lens element isT12, an axial distance between the second lens element and the thirdlens element is T23, the following condition can be satisfied:0.20<(T12+T23)/CT1<1.50. Therefore, it is favorable for improving thespace utilization in the optical imaging lens assembly so as to providesufficient space for lens assembling, thereby increasing the assemblingyield rate.

When a maximum axial distance among all axial distances between everytwo lens elements of the optical imaging lens assembly that are adjacentto each other is ATmax, a minimum central thickness among all centralthicknesses of the lens elements of the optical imaging lens assembly isCTmin, the following condition can be satisfied: ATmax/CTmin<2.0.Therefore, it is favorable for proper lens configurations according tothe sizes and the thicknesses of the lens elements so as to obtain abetter assembling process with efficient space utilizations.

When a maximum effective radius of the object-side surface of the firstlens element is Y11, a maximum effective radius of the image-sidesurface of the sixth lens element is Y62, the following condition can besatisfied: Y11/Y62<0.90. Therefore, it is favorable for controlling theoptical path, and providing sufficient image height and larger imagingarea so as to improve the image brightness. As seen in FIG. 25, FIG. 25shows a schematic view of the parameters Y11 and Y62 according to the1st embodiment of the present disclosure.

When a focal length of the fifth lens element is f5, the focal length ofthe sixth lens element is f6, the following condition can be satisfied:−0.85<f6/f5<2.0. Therefore, it is favorable for balancing the refractivepower distribution between the object side and the image side so as tooptimize the optical characteristics on the image side, thereby reducingthe total track length.

According to the disclosure, at least two of the lens elements of theoptical imaging lens assembly that each can have an Abbe number lessthan 30. That is, two or more of the Abbe numbers of the first throughthe sixth lens elements can be less than 30. Therefore, it is favorablefor balancing the focusing positions with different wavelengths so as toprevent blur effects on the image.

When the axial distance between the second lens element and the thirdlens element is T23, an axial distance between the third lens elementand the fourth lens element is T34, an axial distance between the fourthlens element and the fifth lens element is T45, the following conditioncan be satisfied: 0.45<T34/(T23+T45). Therefore, it is favorable for theconfiguration of the optical imaging lens assembly being moresymmetrical so as to further improve the image quality.

When the maximum axial distance among all axial distances between everytwo lens elements of the optical imaging lens assembly that are adjacentto each other is ATmax, a maximum image height of the optical imaginglens assembly (half of a diagonal length of an effective photosensitivearea of the image sensor) is ImgH, and the following condition issatisfied: ATmax/ImgH≤0.23. Therefore, it is favorable for the spaceutilization of the optical imaging lens assembly while providing asufficient imaging area.

When the maximum axial distance among all axial distances between everytwo lens elements of the optical imaging lens assembly that are adjacentto each other is ATmax, a maximum central thickness among all centralthicknesses of the lens elements of the optical imaging lens assembly isCTmax, the following condition can be satisfied: 1.1<CTmax/ATmax<5.0.Therefore, it is favorable for properly arranging the lens elementswhile reducing the sensitivity.

When the axial distance between the object-side surface of the firstlens element and the image-side surface of the sixth lens element is TD,a vertical distance between a non-axial critical point on the image-sidesurface of the sixth lens element and an optical axis is Yc62, thefollowing condition can be satisfied: 1.0<TD/Yc62<4.0. Therefore, it isfavorable for correcting aberrations at the off-axis region andpreventing the field curvature. As seen in FIG. 25, FIG. 25 shows aschematic view of the parameter Yc62 according to the 1st embodiment ofthe present disclosure. A critical point of a lens element is anon-axial point of the lens surface where its tangent is perpendicularto the optical axis. The critical point on the image-side surface of thesixth lens element is a non-axial point on the image-side surface of thesixth lens element where its tangent is perpendicular to the opticalaxis. Specifically, the critical points mentioned above are not locatedon the optical axis.

When the curvature radius of the object-side surface of the sixth lenselement is R11, a curvature radius of the image-side surface of thesixth lens element is R12, the following condition can be satisfied:0.50<(R11+R12)/(R11−R12)<2.80. Therefore, it is favorable for keepingthe surface shapes of the sixth lens element from overly curved andeliminating the stray light.

When a curvature radius of the object-side surface of the first lenselement is R1, a curvature radius of the image-side surface of the firstlens element is R2, the following condition can be satisfied:(R1−R2)/(R1+R2)<0.50. Therefore, it is favorable for the surface shapesof the first lens element to correct astigmatism.

When the focal length of the optical imaging lens assembly is f, theaxial distance between the first lens element and the second lenselement is T12, the following condition can be satisfied: 0<T12/f<0.10.Therefore, it is favorable for reducing the axial distance between thefirst lens element and the second lens element so as to obtaincompactness of the optical imaging lens assembly.

According to the present disclosure, an aperture stop can be configuredas a front stop or a middle stop. A front stop disposed between theimaged object and the first lens element can produce a telecentriceffect by providing a longer distance between an exit pupil and theimage surface, thereby improving the image-sensing efficiency of animage sensor (for example, CCD or CMOS). A middle stop disposed betweenthe first lens element and the image surface is favorable for enlargingthe view angle and thereby provides a wider field of view.

According to the present disclosure, the lens elements of the opticalimaging lens assembly can be made of glass or plastic material. When thelens elements are made of glass material, the refractive powerdistribution of the optical imaging lens assembly may be more flexibleto design. When the lens elements are made of plastic material,manufacturing costs can be effectively reduced. Furthermore, surfaces ofeach lens element can be arranged to be aspheric, since the asphericsurface of the lens element is easy to form a shape other than aspherical surface so as to have more controllable variables foreliminating aberrations thereof and to further decrease the requirednumber of the lens elements. Therefore, the total track length of theoptical imaging lens assembly can also be reduced.

According to the present disclosure, each of an object-side surface andan image-side surface has a paraxial region and an off-axial region. Theparaxial region refers to the region of the surface where light raystravel close to the optical axis, and the off-axial region refers to theregion of the surface away from the paraxial region. Particularly unlessotherwise stated, when the lens element has a convex surface, itindicates that the surface can be convex in the paraxial region thereof;when the lens element has a concave surface, it indicates that thesurface can be concave in the paraxial region thereof. Moreover, when aregion of refractive power or focus of a lens element is not defined, itindicates that the region of refractive power or focus of the lenselement can be in the paraxial region thereof.

According to the present disclosure, an image surface of the opticalimaging lens assembly on the corresponding image sensor can be flat orcurved, particularly a concave curved surface facing towards the objectside of the optical imaging lens assembly.

According to the present disclosure, the optical imaging lens assemblycan include at least one stop, such as an aperture stop, a glare stop ora field stop. Said glare stop or said field stop is allocated foreliminating the stray light and thereby improving the image qualitythereof.

According to the present disclosure, an image capturing unit includesthe aforementioned optical imaging lens assembly and an image sensor,wherein the image sensor is disposed on the image side and can belocated on or near an image surface of the aforementioned opticalimaging lens assembly. In some embodiments, the image capturing unit canfurther include a barrel member, a holding member or a combinationthereof.

In FIG. 26, FIG. 27, FIG. 28 and FIG. 29, an image capturing unit 10 maybe installed in, but not limited to, an electronic device, including asmart phone (FIG. 26), a tablet personal computer (FIG. 27), a wearabledevice (FIG. 28) or a dashboard camera (FIG. 29). The electronic devicesshown in the figures are only exemplary for showing the image capturingunit of the present disclosure installed in an electronic device and arenot limited thereto. In some embodiments, the electronic device canfurther include, but not limited to, a display unit, a control unit, astorage unit, a random access memory unit (RAM), a read only memory unit(ROM) or a combination thereof.

According to the present disclosure, the optical imaging lens assemblycan be optionally applied to optical systems with a movable focus.Furthermore, the optical imaging lens assembly is featured with goodcapability in aberration corrections and high image quality, and can beapplied to 3D (three-dimensional) image capturing applications, inproducts such as such as digital cameras, mobile devices, digitaltablets, wearable devices, smart televisions, network surveillancedevices, motion sensing input devices, dashboard cameras, vehicle backupcameras and other electronic imaging devices. According to the abovedescription of the present disclosure, the following specificembodiments are provided for further explanation.

1st Embodiment

FIG. 1 is a schematic view of an image capturing unit according to the1st embodiment of the present disclosure. FIG. 2 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 1stembodiment. In FIG. 1, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 190. The optical imaging lens assemblyincludes, in order from an object side to an image side, a first lenselement 110, an aperture stop 100, a second lens element 120, a thirdlens element 130, a fourth lens element 140, a fifth lens element 150, asixth lens element 160, an IR-cut filter 170 and an image surface 180,wherein the optical imaging lens assembly has a total of six lenselements (110-160).

The first lens element 110 with negative refractive power has anobject-side surface 111 being concave in a paraxial region thereof andan image-side surface 112 being convex in a paraxial region thereof. Thefirst lens element 110 is made of plastic material and has theobject-side surface 111 and the image-side surface 112 being bothaspheric. Both the object-side surface 111 and the image-side surface112 of the first lens element 110 have at least one inflection point.

The second lens element 120 with positive refractive power has anobject-side surface 121 being convex in a paraxial region thereof and animage-side surface 122 being concave in a paraxial region thereof. Thesecond lens element 120 is made of plastic material and has theobject-side surface 121 and the image-side surface 122 being bothaspheric.

The third lens element 130 with positive refractive power has anobject-side surface 131 being convex in a paraxial region thereof and animage-side surface 132 being concave in a paraxial region thereof. Thethird lens element 130 is made of plastic material and has theobject-side surface 131 and the image-side surface 132 being bothaspheric. Both the object-side surface 131 and the image-side surface132 of the third lens element 130 have at least one inflection point.

The fourth lens element 140 with positive refractive power has anobject-side surface 141 being concave in a paraxial region thereof andan image-side surface 142 being convex in a paraxial region thereof. Thefourth lens element 140 is made of plastic material and has theobject-side surface 141 and the image-side surface 142 being bothaspheric.

The fifth lens element 150 with positive refractive power has anobject-side surface 151 being concave in a paraxial region thereof andan image-side surface 152 being convex in a paraxial region thereof. Thefifth lens element 150 is made of plastic material and has theobject-side surface 151 and the image-side surface 152 being bothaspheric.

The sixth lens element 160 with negative refractive power has anobject-side surface 161 being convex in a paraxial region thereof and animage-side surface 162 being concave in a paraxial region thereof. Thesixth lens element 160 is made of plastic material and has theobject-side surface 161 and the image-side surface 162 being bothaspheric. The image-side surface 162 of the sixth lens element 160 hasat least one inflection point.

In this embodiment, two of the lens elements in the optical imaging lensassembly have an Abbe number less than 30. As shown in Table 1, both thethird lens element 130 and the fifth lens element 150 have an Abbenumber less than 30.

The IR-cut filter 170 is made of glass material and located between thesixth lens element 160 and the image surface 180, and will not affectthe focal length of the optical imaging lens assembly. The image sensor190 is disposed on or near the image surface 180 of the optical imaginglens assembly.

The equation of the aspheric surface profiles of the aforementioned lenselements of the 1st embodiment is expressed as follows:

${{X(Y)} = {{( {Y^{2}/R} )/( {1 + {{sqrt}( {1 - {( {1 + k} ) \times ( {Y/R} )^{2}}} )}} )} + {\sum\limits_{i}\; {({Ai}) \times ( Y^{i} )}}}},$

where,

X is the relative distance between a point on the aspheric surfacespaced at a distance Y from an optical axis and the tangential plane atthe aspheric surface vertex on the optical axis;

Y is the vertical distance from the point on the aspheric surface to theoptical axis;

R is the curvature radius;

k is the conic coefficient; and

Ai is the i-th aspheric coefficient, and in the embodiments, i may be,but is not limited to, 4, 6, 8, 10, 12, 14 and 16.

In the optical imaging lens assembly of the image capturing unitaccording to the 1st embodiment, when a focal length of the opticalimaging lens assembly is f, an f-number of the optical imaging lensassembly is Fno, and half of a maximal field of view of the opticalimaging lens assembly is HFOV, these parameters have the followingvalues: f=1.96 millimeters (mm); Fno=1.95; and HFOV=39.3 degrees (deg.).

When a central thickness of the first lens element 110 is CT1, an axialdistance between the first lens element 110 and the second lens element120 is T12, an axial distance between the second lens element 120 andthe third lens element 130 is T23, the following condition is satisfied:(T12+T23)/CT1=0.62.

When the axial distance between the second lens element 120 and thethird lens element 130 is T23, an axial distance between the third lenselement 130 and the fourth lens element 140 is T34, an axial distancebetween the fourth lens element 140 and the fifth lens element 150 isT45, the following condition is satisfied: T34/(T23+T45)=1.14.

When the axial distance between the first lens element 110 and thesecond lens element 120 is T12, the focal length of the optical imaginglens assembly is f, the following condition is satisfied: T12/f=0.02.

When a maximum axial distance among all axial distances between everytwo lens elements of the optical imaging lens assembly that are adjacentto each other is ATmax, a maximum central thickness among all centralthicknesses of the lens elements (110-160) of the optical imaging lensassembly is CTmax, and the following condition is satisfied:CTmax/ATmax=2.58. In this embodiment, CTmax is equal to the centralthickness of the fourth lens element 140, which is the largest centralthickness of the optical imaging lens assembly. Furthermore, ATmax isequal to the axial distance between the third lens element 130 and thefourth lens element 140, which is the largest axial distance between anytwo adjacent lens elements of the optical imaging lens assembly.

When the maximum axial distance among all axial distances between everytwo lens elements of the optical imaging lens assembly that are adjacentto each other is ATmax, a minimum central thickness among all centralthicknesses of the lens elements (110-160) of the optical imaging lensassembly is CTmin, the following condition is satisfied:ATmax/CTmin=0.96. In this embodiment, CTmin is equal to the centralthickness of the first lens element 110, which is the smallest centralthickness of the optical imaging lens assembly.

When the maximum axial distance among all axial distances between everytwo lens elements of the optical imaging lens assembly that are adjacentto each other is ATmax, a maximum image height of the optical imaginglens assembly is ImgH, the following condition is satisfied:ATmax/ImgH=0.10.

When a curvature radius of the object-side surface 111 of the first lenselement 110 is R1, a curvature radius of the image-side surface 112 ofthe first lens element 110 is R2, the following condition is satisfied:(R1−R2)/(R1+R2)=−0.18.

When a curvature radius of the object-side surface 141 of the fourthlens element 140 is R7, a curvature radius of the image-side surface 142of the fourth lens element 140 is R8, the following condition issatisfied: (R7+R8)/(R7−R8)=1.13.

When a curvature radius of the object-side surface 161 of the sixth lenselement 160 is R11, a curvature radius of the image-side surface 162 ofthe sixth lens element 160 is R12, the following condition is satisfied:(R11+R12)/(R11−R12)=2.31.

When a curvature radius of the image-side surface 152 of the fifth lenselement 150 is R10, the curvature radius of the object-side surface 161of the sixth lens element 160 is R11, the following condition issatisfied: R10/R11=−0.46.

When a focal length of the second lens element 120 is f2, a focal lengthof the third lens element 130 is f3, the following condition issatisfied: f2/f3=0.19.

When a focal length of the first lens element 110 is f1, a focal lengthof the fourth lens element 140 is f4, the following condition issatisfied: f4/f1=−0.08.

When a focal length of the fifth lens element 150 is f5, a focal lengthof the sixth lens element 160 is f6, the following condition issatisfied: f6/f5=−0.11.

When the focal length of the first lens element 110 is f1, the focallength of the sixth lens element 160 is f6, the following condition issatisfied: f6/f1=0.11.

When a maximum effective radius of the object-side surface 111 of thefirst lens element 110 is Y11, a maximum effective radius of theimage-side surface 162 of the sixth lens element 160 is Y62, thefollowing condition is satisfied: Y11/Y62=0.56.

When an axial distance between the aperture stop 100 and the image-sidesurface 162 of the sixth lens element 160 is SD, an axial distancebetween the object-side surface 111 of the first lens element 110 andthe image-side surface 162 of the sixth lens element 160 is TD, thefollowing condition is satisfied: SD/TD=0.85.

When the axial distance between the object-side surface 111 of the firstlens element 110 and the image-side surface 162 of the sixth lenselement 160 is TD, a vertical distance between a non-axial criticalpoint on the image-side surface 162 of the sixth lens element 160 and anoptical axis is Yc62, the following condition is satisfied:TD/Yc62=2.53.

When the focal length of the optical imaging lens assembly is f, anaxial distance between the object-side surface 111 of the first lenselement 110 and the image surface 180 is TL, the following condition issatisfied: TL/f=1.53.

When half of the maximal field of view of the optical imaging lensassembly is HFOV, the following condition is satisfied: tan(HFOV)=0.82.

The detailed optical data of the 1st embodiment are shown in Table 1 andthe aspheric surface data are shown in Table 2 below.

TABLE 1 1st Embodiment f = 1.96 mm, Fno = 1.95, HFOV = 39.3 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Lens 1 −2.368 (ASP) 0.180 Plastic 1.544 55.9−15.25 2 −3.402 (ASP) 0.150 3 Ape. Stop Plano −0.120 4 Lens 2 1.008(ASP) 0.343 Plastic 1.544 55.9 3.41 5 1.940 (ASP) 0.082 6 Lens 3 1.083(ASP) 0.218 Plastic 1.640 23.3 18.38 7 1.099 (ASP) 0.173 8 Lens 4−10.368 (ASP) 0.447 Plastic 1.544 55.9 1.21 9 −0.627 (ASP) 0.070 10 Lens5 −0.482 (ASP) 0.308 Plastic 1.640 23.3 15.60 11 −0.575 (ASP) 0.035 12Lens 6 1.236 (ASP) 0.280 Plastic 1.544 55.9 −1.72 13 0.490 (ASP) 0.40014 IR-cut filter Plano 0.100 Glass 1.517 64.2 — 15 Plano 0.335 16 ImagePlano — Note: Reference wavelength is 587.6 nm (d-line).

TABLE 2 Aspheric Coefficients Surface # 1 2 4 5 6 7 k = −2.1522E+01−1.9205E+01 −3.2366E−01 2.6515E+00 6.2976E−02 −7.5591E−01 A4 =2.9738E−02 3.7739E−02 −1.2458E−01 −8.6632E−01 −1.2392E+00 −4.1128E−01 A6= 6.2670E−03 4.5299E−02 6.6794E−01 6.2713E−02 −1.1476E+00 −2.1531E+00 A8= 3.7595E−02 7.2555E−02 −4.4923E+00 −6.0251E−01 −5.2051E+00 2.2866E+00A10 = 9.4129E−02 1.1346E−01 1.6393E+01 −5.7601E−01 2.3582E+01 1.2749E+01A12 = −9.4638E−02 −5.1833E−03 −2.7252E+01 −4.0948E+00 −3.3750E+01−4.6951E+01 A14 = — — −1.4193E+00 −1.0239E+01 −1.7379E+01 3.8077E+01Surface # 8 9 10 11 12 13 k = −3.0000E+01 −1.2476E+00 −2.7270E+00−4.4474E+00 −3.9819E−01 −5.3869E+00 A4 = −1.2055E−01 3.3374E−015.5224E−01 1.5436E−02 −1.6035E+00 −5.6950E−01 A6 = −8.7913E−01−5.6921E−01 −2.0662E−01 1.8290E+00 3.9133E+00 1.1644E+00 A8 = 4.6518E+002.2708E+00 3.2787E+00 −5.1084E+00 −7.9805E+00 −1.9128E+00 A10 =−9.2226E+00 −6.6227E+00 −1.9369E+01 8.8043E+00 1.0982E+01 2.0271E+00 A12= 3.1721E−03 5.6085E+00 3.9296E+01 −8.6140E+00 −8.9149E+00 −1.3249E+00A14 = 3.8700E+01 1.0320E+01 −3.4402E+01 3.5325E+00 3.8610E+00 4.8652E−01A16 = −5.2461E+01 — 7.9822E+00 −1.9181E−01 −6.9325E−01 −7.6119E−02

In Table 1, the curvature radius, the thickness and the focal length areshown in millimeters (mm). Surface numbers 0-16 represent the surfacessequentially arranged from the object-side to the image-side along theoptical axis. In Table 2, k represents the conic coefficient of theequation of the aspheric surface profiles. A4-A16 represent the asphericcoefficients ranging from the 4th order to the 8th order. The tablespresented below for each embodiment are the corresponding schematicparameter and aberration curves, and the definitions of the terms in thetables are the same as Table 1 and Table 2 of the 1st embodiment.Therefore, an explanation in this regard will not be provided again.

2nd Embodiment

FIG. 3 is a schematic view of an image capturing unit according to the2nd embodiment of the present disclosure. FIG. 4 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 2ndembodiment. In FIG. 3, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 290. The optical imaging lens assemblyincludes, in order from an object side to an image side, a first lenselement 210, an aperture stop 200, a second lens element 220, a thirdlens element 230, a fourth lens element 240, a fifth lens element 250, asixth lens element 260, an IR-cut filter 270 and an image surface 280,wherein the optical imaging lens assembly has a total of six lenselements (210-260).

The first lens element 210 with positive refractive power has anobject-side surface being 211 convex in a paraxial region thereof and animage-side surface 212 being concave in a paraxial region thereof. Thefirst lens element 210 is made of plastic material and has theobject-side surface 211 and the image-side surface 212 being bothaspheric.

The second lens element 220 with positive refractive power has anobject-side surface 221 being convex in a paraxial region thereof and animage-side surface 222 being concave in a paraxial region thereof. Thesecond lens element 220 is made of plastic material and has theobject-side surface 221 and the image-side surface 222 being bothaspheric.

The third lens element 230 with positive refractive power has anobject-side surface 231 being convex in a paraxial region thereof and animage-side surface 232 being concave in a paraxial region thereof. Thethird lens element 230 is made of plastic material and has theobject-side surface 231 and the image-side surface 232 being bothaspheric. Both the object-side surface 231 and the image-side surface232 of the third lens element 230 have at least one inflection point.

The fourth lens element 240 with positive refractive power has anobject-side surface 241 being convex in a paraxial region thereof and animage-side surface 242 being convex in a paraxial region thereof. Thefourth lens element 240 is made of plastic material and has theobject-side surface 241 and the image-side surface 242 being bothaspheric.

The fifth lens element 250 with positive refractive power has anobject-side surface 251 being concave in a paraxial region thereof andan image-side surface 252 being convex in a paraxial region thereof. Thefifth lens element 250 is made of plastic material and has theobject-side surface 251 and the image-side surface 252 being bothaspheric.

The sixth lens element 260 with negative refractive power has anobject-side surface 261 being convex in a paraxial region thereof and animage-side surface 262 being concave in a paraxial region thereof. Thesixth lens element 260 is made of plastic material and has theobject-side surface 261 and the image-side surface 262 being bothaspheric. The image-side surface 262 of the sixth lens element 260 hasat least one inflection point.

In this embodiment, as shown in Table 3, both the third lens element 230and the fifth lens element 250 have an Abbe number less than 30.

The IR-cut filter 270 is made of glass material and located between thesixth lens element 260 and the image surface 280, and will not affectthe focal length of the optical imaging lens assembly. The image sensor290 is disposed on or near the image surface 280 of the optical imaginglens assembly.

The detailed optical data of the 2nd embodiment are shown in Table 3 andthe aspheric surface data are shown in Table 4 below.

TABLE 3 2nd Embodiment f = 1.97 mm, Fno = 2.00, HFOV = 39.2 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Lens 1 4.649 (ASP) 0.254 Plastic 1.544 55.911.14 2 19.545 (ASP) 0.113 3 Ape. Stop Plano −0.075 4 Lens 2 1.242 (ASP)0.258 Plastic 1.544 55.9 10.57 5 1.469 (ASP) 0.094 6 Lens 3 1.066 (ASP)0.180 Plastic 1.640 23.3 36.15 7 1.044 (ASP) 0.167 8 Lens 4 8.351 (ASP)0.483 Plastic 1.544 55.9 1.19 9 −0.689 (ASP) 0.070 10 Lens 5 −0.464(ASP) 0.281 Plastic 1.640 23.3 60.47 11 −0.566 (ASP) 0.035 12 Lens 61.109 (ASP) 0.313 Plastic 1.544 55.9 −2.02 13 0.497 (ASP) 0.400 14IR-cut filter Plano 0.100 Glass 1.517 64.2 — 15 Plano 0.335 16 ImagePlano — Note: Reference wavelength is 587.6 nm (d-line).

TABLE 4 Aspheric Coefficients Surface # 1 2 4 5 6 7 k = −3.5030E+00−3.0000E+01 −8.3839E−01 6.1458E−01 −8.3409E−01 −4.1818E+00 A4 =2.1926E−02 −8.5260E−03 −1.2621E−01 −9.8841E−01 −1.3598E+00 −4.3285E−01A6 = 3.1384E−02 7.3296E−02 3.5521E−01 7.2107E−01 −2.6424E−01 −1.7209E+00A8 = 1.9083E−01 5.3906E−01 −3.9558E+00 −5.3940E+00 −5.8306E+001.7604E+00 A10 = −5.3127E−02 −2.6114E−01 1.3910E+01 8.6788E−011.4892E+01 1.0700E+01 A12 = −1.6043E−02 −8.5207E−01 −3.1694E+015.7676E−01 −3.0491E+01 −5.0554E+01 A14 = — — −1.4193E+00 −1.0239E+01−1.7379E+01 5.3468E+01 Surface # 8 9 10 11 12 13 k = 1.8506E+01−9.3396E−01 −2.6704E+00 −3.7300E+00 −1.1654E+00 −4.8666E+00 A4 =−1.0233E−01 2.2755E−01 3.2048E−01 −2.8243E−02 −1.7204E+00 −5.9965E−01 A6= −1.2346E+00 −1.9211E−01 3.2656E−01 1.9418E+00 4.0163E+00 1.1662E+00 A8= 4.2803E+00 2.0479E+00 3.3780E+00 −5.0600E+00 −7.9344E+00 −1.8921E+00A10 = −8.5988E+00 −7.3388E+00 −2.0089E+01 8.7504E+00 1.0971E+012.0176E+00 A12 = 1.9480E−01 4.8408E+00 3.9138E+01 −8.6884E+00−8.9379E+00 −1.3291E+00 A14 = 3.3765E+01 1.2340E+01 −3.2862E+013.4993E+00 3.8516E+00 4.8737E−01 A16 = −3.1765E+01 — 8.2948E+00−1.2708E−01 −6.8240E−01 −7.5190E−02

In the 2nd embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 2nd embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 3 and Table 4 asthe following values and satisfy the following conditions:

2nd Embodiment f [mm] 1.97 (R11 + R12)/(R11 − R12) 2.62 Fno 2.00 R10/R11−0.51 HFOV [deg.] 39.2 f2/f3 0.29 (T12 + T23)/CT1 0.52 f4/f1 0.11T34/(T23 + T45) 1.02 f6/f5 −0.03 T12/f 0.02 f6/f1 −0.18 CTmax/ATmax 2.89Y11/Y62 0.52 ATmax/CTmin 0.93 SD/TD 0.83 ATmax/ImgH 0.10 TD/Yc62 2.59(R1 − R2)/(R1 + R2) −0.62 TL/f 1.53 (R7 + R8)/(R7 − R8) 0.85 tan(HFOV)0.81

3rd Embodiment

FIG. 5 is a schematic view of an image capturing unit according to the3rd embodiment of the present disclosure. FIG. 6 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 3rdembodiment. In FIG. 5, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 390. The optical imaging lens assemblyincludes, in order from an object side to an image side, an aperturestop 300, a first lens element 310, a second lens element 320, a thirdlens element 330, a fourth lens element 340, a fifth lens element 350, asixth lens element 360, an IR-cut filter 370 and an image surface 380,wherein the optical imaging lens assembly has a total of six lenselements (310-360).

The first lens element 310 with negative refractive power has anobject-side surface 311 being convex in a paraxial region thereof and animage-side surface 312 being concave in a paraxial region thereof. Thefirst lens element 310 is made of plastic material and has theobject-side surface 311 and the image-side surface 312 being bothaspheric. Both the object-side surface 311 and the image-side surface312 of the first lens element 310 have at least one inflection point.

The second lens element 320 with positive refractive power has anobject-side surface 321 being convex in a paraxial region thereof and animage-side surface 322 being concave in a paraxial region thereof. Thesecond lens element 320 is made of plastic material and has theobject-side surface 321 and the image-side surface 322 being bothaspheric.

The third lens element 330 with positive refractive power has anobject-side surface 331 being convex in a paraxial region thereof and animage-side surface 332 being concave in a paraxial region thereof. Thethird lens element 330 is made of plastic material and has theobject-side surface 331 and the image-side surface 332 being bothaspheric. Both the object-side surface 331 and the image-side surface332 of the third lens element 330 have at least one inflection point.

The fourth lens element 340 with positive refractive power has anobject-side surface 341 being concave in a paraxial region thereof andan image-side surface 342 being convex in a paraxial region thereof. Thefourth lens element 340 is made of plastic material and has theobject-side surface 341 and the image-side surface 342 being bothaspheric.

The fifth lens element 350 with positive refractive power has anobject-side surface 351 being concave in a paraxial region thereof andan image-side surface 352 being convex in a paraxial region thereof. Thefifth lens element 350 is made of plastic material and has theobject-side surface 351 and the image-side surface 352 being bothaspheric.

The sixth lens element 360 with negative refractive power has anobject-side surface 361 being convex in a paraxial region thereof and animage-side surface 362 being concave in a paraxial region thereof. Thesixth lens element 360 is made of plastic material and has theobject-side surface 361 and the image-side surface 362 being bothaspheric. The image-side surface 362 of the sixth lens element 360 hasat least one inflection point.

In this embodiment, as shown in Table 5, the first lens element 310, thethird lens element 330, the fifth lens element 350 and the sixth lenselement 360 all have an Abbe number less than 30.

The IR-cut filter 370 is made of glass material and located between thesixth lens element 360 and the image surface 380, and will not affectthe focal length of the optical imaging lens assembly. The image sensor390 is disposed on or near the image surface 380 of the optical imaginglens assembly.

The detailed optical data of the 3rd embodiment are shown in Table 5 andthe aspheric surface data are shown in Table 6 below.

TABLE 5 3rd Embodiment f = 3.53 mm, Fno = 2.25, HFOV = 39.9 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Ape. Stop Plano −0.053 2 Lens 1 3.129 (ASP)0.238 Plastic 1.640 23.3 −14.35 3 2.264 (ASP) 0.125 4 Lens 2 1.805 (ASP)0.705 Plastic 1.544 55.9 4.30 5 6.787 (ASP) 0.146 6 Lens 3 2.081 (ASP)0.290 Plastic 1.640 23.3 33.60 7 2.179 (ASP) 0.451 8 Lens 4 −27.987(ASP) 0.568 Plastic 1.544 55.9 6.28 9 −3.066 (ASP) 0.259 10 Lens 5−1.492 (ASP) 0.316 Plastic 1.640 23.3 5.93 11 −1.159 (ASP) 0.040 12 Lens6 2.782 (ASP) 0.748 Plastic 1.640 23.3 −3.29 13 1.072 (ASP) 0.650 14IR-cut filter Plano 0.195 Glass 1.517 64.2 — 15 Plano 0.345 16 ImagePlano — Note: Reference wavelength is 587.6 nm (d-line).

TABLE 6 Aspheric Coefficients Surface # 2 3 4 5 6 7 k = −1.5480E+01−9.4969E+00 −2.8990E+00 9.0100E+00 −1.7427E+00 −2.6450E+00 A4 =−5.0300E−02 −1.0061E−01 −1.7168E−02 −1.1655E−01 −1.9213E−01 −7.0445E−02A6 = −1.0664E−02 3.5244E−03 1.9073E−02 6.6317E−02 −7.4640E−03−6.8169E−02 A8 = 1.0128E−02 9.7609E−03 −1.7038E−02 −7.7285E−02−5.0345E−02 2.0998E−02 A10 = −7.5543E−03 6.2840E−03 1.4427E−022.2709E−02 3.8501E−02 3.4910E−02 A12 = 6.1979E−03 −1.9770E−03−5.3951E−03 3.1787E−03 −4.8364E−03 −2.8607E−02 A14 = — — −3.2800E−04−1.9156E−03 9.2297E−04 6.6281E−03 Surface # 8 9 10 11 12 13 k =2.0000E+01 3.1416E+00 −6.6777E+00 −3.5182E+00 −3.8370E−01 −4.7563E+00 A4= −4.7656E−03 −1.7986E−02 −1.0652E−02 −3.7861E−02 −2.5169E−01−9.1828E−02 A6 = −2.4795E−02 −1.4637E−02 6.9173E−03 8.4338E−021.3042E−01 4.6708E−02 A8 = 2.5734E−02 1.8902E−02 3.4924E−02 −4.7919E−02−7.0343E−02 −1.8997E−02 A10 = −2.3743E−02 −1.6441E−02 −4.9071E−022.0812E−02 2.7450E−02 5.1207E−03 A12 = 1.4780E−03 3.3798E−03 2.5560E−02−5.6914E−03 −5.7757E−03 −8.6149E−04 A14 = 6.5680E−03 1.9112E−03−5.3466E−03 5.9821E−04 6.3670E−04 8.0608E−05 A16 = −1.7132E−03 —1.3890E−04 −2.5852E−06 −3.7742E−05 −3.1647E−06

In the 3rd embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 3rd embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 5 and Table 6 asthe following values and satisfy the following conditions:

3rd Embodiment f [mm] 3.53 (R11 + R12)/(R11 − R12) 2.25 Fno 2.25 R10/R11−0.42 HFOV [deg.] 39.9 f2/f3 0.13 (T12 + T23)/CT1 1.14 f4/f1 −0.44T34/(T23 + T45) 1.11 f6/f5 −0.55 T12/f 0.04 f6/f1 0.23 CTmax/ATmax 1.66Y11/Y62 0.32 ATmax/CTmin 1.89 SD/TD 0.99 ATmax/ImgH 0.15 TD/Yc62 2.45(R1 − R2)/(R1 + R2) 0.16 TL/f 1.44 (R7 + R8)/(R7 − R8) 1.25 tan(HFOV)0.84

4th Embodiment

FIG. 7 is a schematic view of an image capturing unit according to the4th embodiment of the present disclosure. FIG. 8 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 4thembodiment. In FIG. 7, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 490. The optical imaging lens assemblyincludes, in order from an object side to an image side, an aperturestop 400, a first lens element 410, a second lens element 420, a thirdlens element 430, a fourth lens element 440, a fifth lens element 450, asixth lens element 460, a IR-cut filter 470 and an image surface 480,wherein the optical imaging lens assembly has a total of six lenselements (410-460).

The first lens element 410 with negative refractive power has anobject-side surface 411 being convex in a paraxial region thereof and animage-side surface 412 being concave in a paraxial region thereof. Thefirst lens element 410 is made of plastic material and has theobject-side surface 411 and the image-side surface 412 being bothaspheric. Both the object-side surface 411 and the image-side surface412 of the first lens element 410 have at least one inflection point.

The second lens element 420 with positive refractive power has anobject-side surface 421 being convex in a paraxial region thereof and animage-side surface 422 being concave in a paraxial region thereof. Thesecond lens element 420 is made of plastic material and has theobject-side surface 421 and the image-side surface 422 being bothaspheric.

The third lens element 430 with positive refractive power has anobject-side surface 431 being convex in a paraxial region thereof and animage-side surface 432 being concave in a paraxial region thereof. Thethird lens element 430 is made of plastic material and has theobject-side surface 431 and the image-side surface 432 being bothaspheric. Both the object-side surface 431 and the image-side surface432 of the third lens element 430 have at least one inflection point.

The fourth lens element 440 with positive refractive power has anobject-side surface 441 being concave in a paraxial region thereof andan image-side surface 442 being convex in a paraxial region thereof. Thefourth lens element 440 is made of plastic material and has theobject-side surface 441 and the image-side surface 442 being bothaspheric.

The fifth lens element 450 with positive refractive power has anobject-side surface 451 being concave in a paraxial region thereof andan image-side surface 452 being convex in a paraxial region thereof. Thefifth lens element 450 is made of plastic material and has theobject-side surface 451 and the image-side surface 452 being bothaspheric.

The sixth lens element 460 with negative refractive power has anobject-side surface 461 being concave in a paraxial region thereof andan image-side surface 462 being concave in a paraxial region thereof.The sixth lens element 460 is made of plastic material and has theobject-side surface 461 and the image-side surface 462 being bothaspheric. The image-side surface 462 of the sixth lens element 460 hasat least one inflection point.

In this embodiment, as shown in Table 7, the first lens element 410, thethird lens element 430, the fifth lens element 450 and the sixth lenselement 460 all have an Abbe number less than 30.

The IR-cut filter 470 is made of glass material and located between thesixth lens element 460 and the image surface 480, and will not affectthe focal length of the optical imaging lens assembly. The image sensor490 is disposed on or near the image surface 480 of the optical imaginglens assembly.

The detailed optical data of the 4th embodiment are shown in Table 7 andthe aspheric surface data are shown in Table 8 below.

TABLE 7 4th Embodiment f = 3.67 mm, Fno = 2.25, HFOV = 38.9 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Ape. Stop Plano −0.065 2 Lens 1 2.991 (ASP)0.237 Plastic 1.640 23.3 −14.61 3 2.196 (ASP) 0.148 4 Lens 2 1.851 (ASP)0.734 Plastic 1.544 55.9 4.16 5 8.750 (ASP) 0.156 6 Lens 3 2.009 (ASP)0.243 Plastic 1.640 23.3 34.96 7 2.103 (ASP) 0.535 8 Lens 4 −21.681(ASP) 0.531 Plastic 1.544 55.9 6.30 9 −2.984 (ASP) 0.221 10 Lens 5−3.244 (ASP) 0.531 Plastic 1.640 23.3 2.54 11 −1.151 (ASP) 0.040 12 Lens6 −23.523 (ASP) 0.668 Plastic 1.640 23.3 −1.62 13 1.093 (ASP) 0.650 14IR-cut filter Plano 0.195 Glass 1.517 64.2 — 15 Plano 0.307 16 ImagePlano — — Note: Reference wavelength is 587.6 nm (d-line).

TABLE 8 Aspheric Coefficients Surface # 2 3 4 5 6 7 k = −1.5571E+01−8.8676E+00 −2.1774E+00 1.6856E+01 −1.6304E+00 −2.6800E+00 A4 =−3.2894E−02 −7.0871E−02 −1.8274E−02 −1.1359E−01 −1.9574E−01 −8.4041E−02A6 = −1.2159E−02 −2.4757E−03 1.4458E−02 7.0108E−02 −1.2947E−02−7.3574E−02 A8 = −3.5751E−03 −2.6541E−03 −1.6300E−02 −8.1089E−02−4.6044E−02 2.2372E−02 A10 = 2.0298E−02 2.9736E−02 1.4206E−02 2.5426E−024.1365E−02 3.7107E−02 A12 = −9.8714E−03 −1.4663E−02 −4.9917E−034.6948E−03 −4.9885E−03 −2.7640E−02 A14 = — — −6.0811E−04 −3.2431E−03−1.8372E−04 5.8100E−03 Surface # 8 9 10 11 12 13 k = −1.8516E+002.9239E+00 −1.7332E+01 −4.4222E+00 −3.0000E+01 −6.0290E+00 A4 =−1.6245E−03 −6.8169E−03 −5.7791E−02 −7.7226E−02 −1.8128E−01 −9.3410E−02A6 = −2.3105E−02 −2.1858E−02 8.2516E−03 9.0074E−02 1.2762E−01 5.1871E−02A8 = 2.1309E−02 1.8809E−02 3.6085E−02 −4.7181E−02 −7.0908E−02−2.1111E−02 A10 = −2.4479E−02 −1.5772E−02 −4.9758E−02 2.0950E−022.7429E−02 5.4852E−03 A12 = 1.7141E−03 3.2684E−03 2.6013E−02 −5.6450E−03−5.8259E−03 −8.7507E−04 A14 = 6.6992E−03 1.6578E−03 −5.0350E−036.0496E−04 6.4066E−04 7.7285E−05 A16 = −1.7339E−03 — −2.2847E−05−8.1459E−06 −3.6862E−05 −2.8685E−06

In the 4th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 4th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 7 and Table 8 asthe following values and satisfy the following conditions:

4th Embodiment f [mm] 3.67 (R11 + R12)/(R11 − R12) 0.91 Fno 2.25 R10/R110.05 HFOV [deg.] 38.9 f2/f3 0.12 (T12 + T23)/CT1 1.28 f4/f1 −0.43T34/(T23 + T45) 1.42 f6/f5 −0.64 T12/f 0.04 f6/f1 0.11 CTmax/ATmax 1.37Y11/Y62 0.34 ATmax/CTmin 2.26 SD/TD 0.98 ATmax/ImgH 0.18 TD/Yc62 2.58(R1 − R2)/(R1 + R2) 0.15 TL/f 1.42 (R7 + R8)/(R7 − R8) 1.32 tan(HFOV)0.81

5th Embodiment

FIG. 9 is a schematic view of an image capturing unit according to the5th embodiment of the present disclosure. FIG. 10 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 5thembodiment. In FIG. 9, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 590. The optical imaging lens assemblyincludes, in order from an object side to an image side, a first lenselement 510, a second lens element 520, an aperture stop 500, a thirdlens element 530, a fourth lens element 540, a fifth lens element 550, asixth lens element 560, an IR-cut filter 570 and an image surface 580,wherein the optical imaging lens assembly has a total of six lenselements (510-560).

The first lens element 510 with positive refractive power has anobject-side surface 511 being concave in a paraxial region thereof andan image-side surface 512 being convex in a paraxial region thereof. Thefirst lens element 510 is made of plastic material and has theobject-side surface 511 and the image-side surface 512 being bothaspheric. Both the object-side surface 511 and the image-side surface512 of the first lens element 510 have at least one inflection point.

The second lens element 520 with positive refractive power has anobject-side surface 521 being convex in a paraxial region thereof and animage-side surface 522 being concave in a paraxial region thereof. Thesecond lens element 520 is made of plastic material and has theobject-side surface 521 and the image-side surface 522 being bothaspheric.

The third lens element 530 with positive refractive power has anobject-side surface 531 being convex in a paraxial region thereof and animage-side surface 532 being concave in a paraxial region thereof. Thethird lens element 530 is made of plastic material and has theobject-side surface 531 and the image-side surface 532 being bothaspheric. Both the object-side surface 531 and the image-side surface532 of the third lens element 530 have at least one inflection point.

The fourth lens element 540 with positive refractive power has anobject-side surface 541 being convex in a paraxial region thereof and animage-side surface 542 being convex in a paraxial region thereof. Thefourth lens element 540 is made of plastic material and has theobject-side surface 541 and the image-side surface 542 being bothaspheric.

The fifth lens element 550 with positive refractive power has anobject-side surface 551 being concave in a paraxial region thereof andan image-side surface 552 being convex in a paraxial region thereof. Thefifth lens element 550 is made of plastic material and has theobject-side surface 551 and the image-side surface 552 being bothaspheric.

The sixth lens element 560 with negative refractive power has anobject-side surface 561 being convex in a paraxial region thereof and animage-side surface 562 being concave in a paraxial region thereof. Thesixth lens element 560 is made of plastic material and has theobject-side surface 561 and the image-side surface 562 being bothaspheric. The image-side surface 562 of the sixth lens element 560 hasat least one inflection point.

In this embodiment, as shown in Table 9, both the third lens element 530and the fifth lens element 550 have an Abbe number less than 30.

The IR-cut filter 570 is made of glass material and located between thesixth lens element 560 and the image surface 580, and will not affectthe focal length of the optical imaging lens assembly. The image sensor590 is disposed on or near the image surface 580 of the optical imaginglens assembly.

The detailed optical data of the 5th embodiment are shown in Table 9 andthe aspheric surface data are shown in Table 10 below.

TABLE 9 5th Embodiment f = 1.81 mm, Fno = 1.95, HFOV = 41.6 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Lens 1 −1.274 (ASP) 0.216 Plastic 1.544 55.937.46 2 −1.271 (ASP) 0.050 3 Lens 2 1.038 (ASP) 0.311 Plastic 1.544 55.96.02 4 1.358 (ASP) 0.050 5 Ape. Stop Plano 0.070 6 Lens 3 1.058 (ASP)0.180 Plastic 1.640 23.3 73.54 7 1.011 (ASP) 0.131 8 Lens 4 5.265 (ASP)0.481 Plastic 1.544 55.9 1.16 9 −0.695 (ASP) 0.070 10 Lens 5 −0.492(ASP) 0.309 Plastic 1.640 23.3 26.80 11 −0.595 (ASP) 0.035 12 Lens 61.144 (ASP) 0.280 Plastic 1.544 55.9 −2.06 13 0.518 (ASP) 0.400 14IR-cut filter Plano 0.100 Glass 1.517 64.2 — 15 Plano 0.319 16 ImagePlano — Note: Reference wavelength is 587.6 nm (d-line).

TABLE 10 Aspheric Coefficients Surface # 1 2 3 4 6 7 k = −8.6219E+00 −8.3896E+00  −1.0179E+00  3.0638E−01  7.2036E−01 −1.1247E+00 A4 =3.8889E−02 1.8487E−02 −2.1973E−01 −1.0530E+00 −1.0918E+00 −3.9996E−01 A6= 1.8407E−02 1.0400E−01  7.5934E−01  4.8112E−01 −1.4842E+00 −2.0627E+00A8 = 6.0851E−02 −2.3913E−02  −4.9097E+00 −2.5393E−01 −4.7024E+00 1.8743E+00 A10 = −1.8760E−02  8.9207E−02  1.4777E+01 −5.0623E−01 2.5291E+01  1.2519E+01 A12 = — — −1.7318E+01  2.9815E+00 −2.8001E+01−4.5312E+01 A14 = — — −1.4193E+00 −1.0239E+01 −1.7379E+01  3.5032E+01Surface # 8 9 10 11 12 13 k =  2.0000E+01 −1.1484E+00  −3.0783E+00−4.7674E+00 −4.4243E−01 −5.6966E+00 A4 = −8.6736E−02 3.1551E−01 4.8360E−01  8.9446E−02 −1.6290E+00 −5.7132E−01 A6 = −6.5268E−01−5.2083E−01  −1.6986E−01  1.8429E+00  3.9197E+00  1.1617E+00 A8 = 4.4745E+00 2.2735E+00  3.3415E+00 −5.1174E+00 −7.9753E+00 −1.9172E+00A10 = −9.7976E+00 −6.4721E+00  −1.9339E+01  8.7798E+00  1.0977E+01 2.0254E+00 A12 = −2.7318E−01 6.4910E+00  3.9520E+01 −8.6462E+00−8.9203E+00 −1.3215E+00 A14 =  3.9109E+01 1.3672E+01 −3.3541E+01 3.5140E+00  3.8588E+00  4.8769E−01 A16 = −4.4634E+01 —  9.8343E+00−1.4090E−01 −6.8905E−01 −7.7288E−02

In the 5th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 5th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 9 and Table 10as the following values and satisfy the following conditions:

5th Embodiment f [mm] 1.81 (R11 + R12)/(R11 − R12) 2.65 Fno 1.95 R10/R11−0.52 HFOV [deg.] 41.6 f2/f3 0.08 (T12 + T23)/CT1 0.79 f4/f1 0.03T34/(T23 + T45) 0.69 f6/f5 −0.08 T12/f 0.03 f6/f1 −0.06 CTmax/ATmax 3.67Y11/Y62 0.80 ATmax/CTmin 0.73 SD/TD 0.71 ATmax/ImgH 0.08 TD/Yc62 2.65(R1 − R2)/(R1 + R2) 0.001 TL/f 1.66 (R7 + R8)/(R7 − R8) 0.77 tan(HFOV)0.89

6th Embodiment

FIG. 11 is a schematic view of an image capturing unit according to the6th embodiment of the present disclosure. FIG. 12 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 6thembodiment. In FIG. 11, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 690. The optical imaging lens assemblyincludes, in order from an object side to an image side, a first lenselement 610, a second lens element 620, an aperture stop 600, a thirdlens element 630, a fourth lens element 640, a fifth lens element 650, asixth lens element 660, an IR-cut filter 670 and an image surface 680,wherein the optical imaging lens assembly has a total of six lenselements (610-660).

The first lens element 610 with negative refractive power has anobject-side surface 611 being concave in a paraxial region thereof andan image-side surface 612 being convex in a paraxial region thereof. Thefirst lens element 610 is made of plastic material and has theobject-side surface 611 and the image-side surface 612 being bothaspheric. Both the object-side surface 611 and the image-side surface612 of the first lens element 610 have at least one inflection point.

The second lens element 620 with positive refractive power has anobject-side surface 621 being convex in a paraxial region thereof and animage-side surface 622 being concave in a paraxial region thereof. Thesecond lens element 620 is made of plastic material and has theobject-side surface 621 and the image-side surface 622 being bothaspheric.

The third lens element 630 with positive refractive power has anobject-side surface 631 being convex in a paraxial region thereof and animage-side surface 632 being concave in a paraxial region thereof. Thethird lens element 630 is made of plastic material and has theobject-side surface 631 and the image-side surface 632 being bothaspheric. Both the object-side surface 631 and the image-side surface632 of the third lens element 630 have at least one inflection point.

The fourth lens element 640 with positive refractive power has anobject-side surface 641 being convex in a paraxial region thereof and animage-side surface 642 being convex in a paraxial region thereof. Thefourth lens element 640 is made of plastic material and has theobject-side surface 641 and the image-side surface 642 being bothaspheric.

The fifth lens element 650 with positive refractive power has anobject-side surface 651 being concave in a paraxial region thereof andan image-side surface 652 being convex in a paraxial region thereof. Thefifth lens element 650 is made of plastic material and has theobject-side surface 651 and the image-side surface 652 being bothaspheric.

The sixth lens element 660 with negative refractive power has anobject-side surface 661 being convex in a paraxial region thereof and animage-side surface 662 being concave in a paraxial region thereof. Thesixth lens element 660 is made of plastic material and has theobject-side surface 661 and the image-side surface 662 being bothaspheric. The image-side surface 662 of the sixth lens element 660 hasat least one inflection point.

In this embodiment, as shown in Table 11, both the third lens element630 and the fifth lens element 650 have an Abbe number less than 30.

The IR-cut filter 670 is made of glass material and located between thesixth lens element 660 and the image surface 680, and will not affectthe focal length of the optical imaging lens assembly. The image sensor690 is disposed on or near the image surface 680 of the optical imaginglens assembly.

The detailed optical data of the 6th embodiment are shown in Table 11and the aspheric surface data are shown in Table 12 below.

TABLE 11 6th Embodiment f = 4.32 mm, Fno = 1.85, HFOV = 42.3 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Lens 1 −2.756 (ASP) 0.735 Plastic 1.544 55.9−37.80 2 −3.482 (ASP) 0.050 3 Lens 2 2.268 (ASP) 0.849 Plastic 1.54455.9 9.21 4 3.596 (ASP) 0.150 5 Ape. Stop Plano 0.126 6 Lens 3 2.657(ASP) 0.341 Plastic 1.640 23.3 60.00 7 2.711 (ASP) 0.354 8 Lens 4 14.568(ASP) 1.700 Plastic 1.544 55.9 3.05 9 −1.796 (ASP) 0.159 10 Lens 5−1.177 (ASP) 0.663 Plastic 1.640 23.3 68.64 11 −1.398 (ASP) 0.101 12Lens 6 3.291 (ASP) 0.764 Plastic 1.544 55.9 −4.99 13 1.367 (ASP) 1.03814 IR-cut filter Plano 0.260 Glass 1.517 64.2 — 15 Plano 0.520 16 ImagePlano — Note: Reference wavelength is 587.6 nm (d-line).

TABLE 12 Aspheric Coefficients Surface # 1 2 3 4 6 7 k = −8.4350E+00 −9.9373E+00  −1.0439E+00  2.4694E+00  1.1034E+00 −8.8783E−01 A4 =2.6014E−03 3.0207E−03 −1.2140E−02 −5.0622E−02 −5.7027E−02 −2.1576E−02 A6= 1.5997E−04 7.5623E−04  9.9966E−03  1.2232E−02 −1.2972E−02 −1.5103E−02A8 = 2.3393E−05 −4.5192E−05  −4.2800E−03 −2.2076E−03 −6.0495E−03 4.8299E−04 A10 = −1.6059E−06  1.4852E−05  2.2906E−03 −7.7304E−04 3.9027E−03  1.9546E−03 A12 = — — −6.1767E−04  8.5843E−04 −1.2903E−03−1.1333E−03 A14 = — —  1.1997E−04 −1.4849E−04 −1.3786E−04  1.5057E−04Surface # 8 9 10 11 12 13 k =  1.9184E+01 −9.2266E−01  −2.5620E+00−3.7351E+00 −5.2601E−01 −5.7235E+00 A4 =  1.7779E−04 1.3146E−02 1.4105E−02 −3.7962E−04 −9.3894E−02 −3.2410E−02 A6 = −5.0915E−04−3.0804E−03  −1.6859E−03  1.6215E−02  3.3553E−02  9.8838E−03 A8 = 5.3045E−03 2.6091E−03  4.2203E−03 −6.3814E−03 −1.0063E−02 −2.4047E−03A10 = −1.9931E−03 −1.4050E−03  −3.7290E−03  1.6443E−03  2.0568E−03 3.7709E−04 A12 = −5.9223E−05 1.0724E−04  1.0530E−03 −2.4268E−04−2.4813E−04 −3.6813E−05 A14 =  1.3258E−04 3.3346E−05 −1.5201E−04 1.4219E−05  1.5958E−05  2.0219E−06 A16 = −1.4315E−05 —  2.2596E−06 2.4540E−08 −4.2568E−07 −4.7089E−08

In the 6th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 6th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 11 and Table 12as the following values and satisfy the following conditions:

6th Embodiment f [mm] 4.32 (R11 + R12)/(R11 − R12) 2.42 Fno 1.85 R10/R11−0.42 HFOV [deg.] 42.3 f2/f3 0.15 (T12 + T23)/CT1 0.44 f4/f1 −0.08T34/(T23 + T45) 0.81 f6/f5 −0.07 T12/f 0.01 f6/f1 0.13 CTmax/ATmax 4.80Y11/Y62 0.84 ATmax/CTmin 1.04 SD/TD 0.70 ATmax/ImgH 0.09 TD/Yc62 2.76(R1 − R2)/(R1 + R2) −0.12 TL/f 1.81 (R7 + R8)/(R7 − R8) 0.78 tan(HFOV)0.91

7th Embodiment

FIG. 13 is a schematic view of an image capturing unit according to the7th embodiment of the present disclosure. FIG. 14 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 7thembodiment. In FIG. 13, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 790. The optical imaging lens assemblyincludes, in order from an object side to an image side, a first lenselement 710, a second lens element 720, an aperture stop 700, a thirdlens element 730, a fourth lens element 740, a fifth lens element 750, asixth lens element 760, an IR-cut filter 770 and an image surface 780,wherein the optical imaging lens assembly has a total of six lenselements (710-760).

The first lens element 710 with negative refractive power has anobject-side surface 711 being concave in a paraxial region thereof andan image-side surface 712 being convex in a paraxial region thereof. Thefirst lens element 710 is made of plastic material and has theobject-side surface 711 and the image-side surface 712 being bothaspheric. Both the object-side surface 711 and the image-side surface712 of the first lens element 710 have at least one inflection point.

The second lens element 720 with positive refractive power has anobject-side surface 721 being convex in a paraxial region thereof and animage-side surface 722 being concave in a paraxial region thereof. Thesecond lens element 720 is made of plastic material and has theobject-side surface 721 and the image-side surface 722 being bothaspheric.

The third lens element 730 with positive refractive power has anobject-side surface 731 being convex in a paraxial region thereof and animage-side surface 732 being concave in a paraxial region thereof. Thethird lens element 730 is made of plastic material and has theobject-side surface 731 and the image-side surface 732 being bothaspheric. The object-side surface 731 of the third lens element 730 hasat least one inflection point.

The fourth lens element 740 with positive refractive power has anobject-side surface 741 being convex in a paraxial region thereof and animage-side surface 742 being convex in a paraxial region thereof. Thefourth lens element 740 is made of plastic material and has theobject-side surface 741 and the image-side surface 742 being bothaspheric.

The fifth lens element 750 with positive refractive power has anobject-side surface 751 being concave in a paraxial region thereof andan image-side surface 752 being convex in a paraxial region thereof. Thefifth lens element 750 is made of plastic material and has theobject-side surface 751 and the image-side surface 752 being bothaspheric.

The sixth lens element 760 with negative refractive power has anobject-side surface 761 being concave in a paraxial region thereof andan image-side surface 762 being concave in a paraxial region thereof.The sixth lens element 760 is made of plastic material and has theobject-side surface 761 and the image-side surface 762 being bothaspheric. The image-side surface 762 of the sixth lens element 760 hasat least one inflection point.

In this embodiment, as shown in Table 13, both the first lens element710 and the third lens element 730 have an Abbe number less than 30.

The IR-cut filter 770 is made of glass material and located between thesixth lens element 760 and the image surface 780, and will not affectthe focal length of the optical imaging lens assembly. The image sensor790 is disposed on or near the image surface 780 of the optical imaginglens assembly.

The detailed optical data of the 7th embodiment are shown in Table 13and the aspheric surface data are shown in Table 14 below.

TABLE 13 7th Embodiment f = 5.19 mm, Fno = 1.85, HFOV = 38.3 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Lens 1 −4.251 (ASP) 0.302 Plastic 1.660 20.4−27.29 2 −5.722 (ASP) 0.050 3 Lens 2 2.271 (ASP) 1.000 Plastic 1.53555.8 6.75 4 5.181 (ASP) 0.229 5 Ape. Stop Plano 0.050 6 Lens 3 2.100(ASP) 0.353 Plastic 1.639 23.3 28.07 7 2.223 (ASP) 0.817 8 Lens 4 94.726(ASP) 1.100 Plastic 1.535 55.8 8.96 9 −5.030 (ASP) 0.143 10 Lens 5−7.511 (ASP) 0.471 Plastic 1.583 30.2 14.71 11 −4.098 (ASP) 0.942 12Lens 6 −35.494 (ASP) 0.287 Plastic 1.535 55.8 −4.25 13 2.436 (ASP) 0.50014 IR-cut filter Plano 0.210 Glass 1.517 64.2 — 15 Plano 0.388 16 ImagePlano — Note: Reference wavelength is 587.6 nm (d-line).

TABLE 14 Aspheric Coefficients Surface # 1 2 3 4 6 7 k = −1.5513E+01 −3.0000E+01  −4.5588E−01   3.1527E+00  1.6729E−01 −4.9914E−01 A4 =1.2375E−02 1.7168E−02 1.1552E−03 −4.6057E−02 −6.0873E−02 −1.5810E−02 A6= 5.4171E−04 8.5033E−04 5.0807E−03  1.8612E−02  1.9233E−03 −1.2193E−02A8 = −1.1858E−04  −6.2570E−05  −3.5973E−03  −4.3537E−03 −6.3814E−03 2.6843E−03 A10 = 7.8660E−06 1.7132E−05 2.3909E−03 −7.5425E−04 3.0392E−03  2.7315E−03 A12 = — — −7.5805E−04   8.7378E−04 −4.6462E−04−1.5332E−03 A14 = — — 1.0785E−04 −1.6659E−04 −1.1058E−04  2.9965E−04Surface # 8 9 10 11 12 13 k = −3.0000E+01 2.1193E+00 4.0155E+00−3.0000E+01 −3.0000E+01 −1.0134E+01 A4 = −9.2995E−03 −6.7503E−02 −5.2615E−02  −1.7555E−02 −8.5975E−02 −4.0992E−02 A6 = −2.7473E−031.2206E−02 1.4582E−03  1.3101E−02  3.4216E−02  1.1663E−02 A8 = 3.1623E−03 2.1228E−03 6.6661E−03 −6.3514E−03 −1.0057E−02 −2.6628E−03A10 = −1.6321E−03 −1.5878E−03  −4.0043E−03   1.7029E−03  2.0552E−03 3.8479E−04 A12 =  5.6134E−05 5.8249E−05 9.4726E−04 −2.3307E−04−2.4850E−04 −3.5795E−05 A14 =  1.4394E−04 3.4569E−05 −1.4444E−04  1.4636E−05  1.5898E−05  2.0214E−06 A16 = −2.2524E−05 — 1.3814E−05−2.9797E−07 −4.1736E−07 −5.1000E−08

In the 7th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 7th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 13 and Table 14as the following values and satisfy the following conditions:

7th Embodiment f [mm] 5.19 (R11 + R12)/(R11 − R12) 0.87 Fno 1.85 R10/R110.12 HFOV [deg.] 38.3 f2/f3 0.24 (T12 + T23)/CT1 1.09 f4/f1 −0.33T34/(T23 + T45) 1.94 f6/f5 −0.29 T12/f 0.01 f6/f1 0.16 CTmax/ATmax 1.17Y11/Y62 0.73 ATmax/CTmin 3.28 SD/TD 0.72 ATmax/ImgH 0.22 TD/Yc62 3.68(R1 − R2)/(R1 + R2) −0.15 TL/f 1.32 (R7 + R8)/(R7 − R8) 0.90 tan(HFOV)0.79

8th Embodiment

FIG. 15 is a schematic view of an image capturing unit according to the8th embodiment of the present disclosure. FIG. 16 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 8thembodiment. In FIG. 15, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 890. The optical imaging lens assemblyincludes, in order from an object side to an image side, a first lenselement 810, an aperture stop 800, a second lens element 820, a thirdlens element 830, a fourth lens element 840, a fifth lens element 850, asixth lens element 860, an IR-cut filter 870 and an image surface 880,wherein the optical imaging lens assembly has a total of six lenselements (810-860).

The first lens element 810 with positive refractive power has anobject-side surface 811 being concave in a paraxial region thereof andan image-side surface 812 being convex in a paraxial region thereof. Thefirst lens element 810 is made of plastic material and has theobject-side surface 811 and the image-side surface 812 being bothaspheric. Both the object-side surface 811 and the image-side surface812 of the first lens element 810 have at least one inflection point.

The second lens element 820 with positive refractive power has anobject-side surface 821 being convex in a paraxial region thereof and animage-side surface 822 being convex in a paraxial region thereof. Thesecond lens element 820 is made of plastic material and has theobject-side surface 821 and the image-side surface 822 being bothaspheric.

The third lens element 830 with positive refractive power has anobject-side surface 831 being concave in a paraxial region thereof andan image-side surface 832 being convex in a paraxial region thereof. Thethird lens element 830 is made of plastic material and has theobject-side surface 831 and the image-side surface 832 being bothaspheric. The image-side surface 832 of the third lens element 830 hasat least one inflection point.

The fourth lens element 840 with positive refractive power has anobject-side surface 841 being concave in a paraxial region thereof andan image-side surface 842 being convex in a paraxial region thereof. Thefourth lens element 840 is made of plastic material and has theobject-side surface 841 and the image-side surface 842 being bothaspheric.

The fifth lens element 850 with positive refractive power has anobject-side surface 851 being concave in a paraxial region thereof andan image-side surface 852 being convex in a paraxial region thereof. Thefifth lens element 850 is made of plastic material and has theobject-side surface 851 and the image-side surface 852 being bothaspheric.

The sixth lens element 860 with negative refractive power has anobject-side surface 861 being convex in a paraxial region thereof and animage-side surface 862 being concave in a paraxial region thereof. Thesixth lens element 860 is made of plastic material and has theobject-side surface 861 and the image-side surface 862 being bothaspheric. The image-side surface 862 of the sixth lens element 860 hasat least one inflection point.

In this embodiment, as shown in Table 15, the third lens element 830,the fifth lens element 850 and the sixth lens element 860 all have anAbbe number less than 30.

The IR-cut filter 870 is made of glass material and located between thesixth lens element 860 and the image surface 880, and will not affectthe focal length of the optical imaging lens assembly. The image sensor890 is disposed on or near the image surface 880 of the optical imaginglens assembly.

The detailed optical data of the 8th embodiment are shown in Table 15and the aspheric surface data are shown in Table 16 below.

TABLE 15 8th Embodiment f = 2.02 mm, Fno = 2.10, HFOV = 44.9 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Lens 1 −1.687 (ASP) 0.500 Plastic 1.544 55.9107.28 2 −1.810 (ASP) 0.472 3 Ape. Stop Plano −0.091 4 Lens 2 1.371(ASP) 0.538 Plastic 1.544 55.9 2.00 5 −4.549 (ASP) 0.344 6 Lens 3 −1.095(ASP) 0.240 Plastic 1.640 23.3 19.10 7 −1.091 (ASP) 0.030 8 Lens 4−0.818 (ASP) 0.499 Plastic 1.544 55.9 2.45 9 −0.616 (ASP) 0.288 10 Lens5 −0.664 (ASP) 0.352 Plastic 1.640 23.3 5.75 11 −0.679 (ASP) 0.030 12Lens 6 3.788 (ASP) 0.350 Plastic 1.640 23.3 −1.81 13 0.856 (ASP) 0.35014 IR-cut filter Plano 0.210 Glass 1.517 64.2 — 15 Plano 0.088 16 ImagePlano — Note: Reference wavelength is 587.6 nm (d-line).

TABLE 16 Aspheric Coefficients Surface # 1 2 4 5 6 7 k = −2.8455E+00 −6.4994E+00 5.7027E−01  1.0000E+00 −2.3791E+00 −5.0000E+01 A4 =1.4843E−02  5.4886E−03 2.8492E−02 −1.4255E−01 −6.2689E−01 −2.4133E−02 A6= 1.1601E−03  5.3318E−03 −2.0112E−01  −6.7977E−01 −3.8069E−02 4.0095E−01 A8 = 1.2216E−04  1.3163E−02 3.5205E−01  2.0529E+00−2.2083E+00 −1.1579E+00 A10 = 9.6288E−04 −4.1280E−03 −2.0805E+00 −6.8259E+00  8.9886E+00  1.4765E+00 A12 = −3.9061E−04  −2.1335E−045.1214E−01  6.6490E+00 −1.4236E+01 −1.3777E+00 A14 = — — −8.4253E−01 −3.7835E+00  7.8660E+00  5.3086E−01 Surface # 8 9 10 11 12 13 k =−2.8703E+01 −4.9094E+00 −8.3229E+00 −5.4902E+00 −9.5149E+00 −5.4816E+00A4 =  1.0269E−01 −6.7248E−01 −2.9662E−01 −2.5031E−01 −2.6555E−01−1.5119E−01 A6 =  9.5798E−02  1.1001E+00  1.2285E+00  7.0559E−01 6.1805E−02  5.1411E−02 A8 = −8.4598E−02 −8.9725E−01 −1.7300E+00−7.9393E−01 −7.5944E−03 −1.3276E−02 A10 = −4.3876E−01  5.7528E−01 1.4453E+00  5.9509E−01  1.1791E−02  1.2922E−03 A12 =  2.6767E−01−5.1121E−02 −7.8973E−01 −2.6633E−01  1.7571E−03  3.9640E−04 A14 =−6.4012E−02 —  2.6958E−01  6.0374E−02 −1.6464E−04 −7.3042E−05 A16 = — —−4.3538E−02 −5.2845E−03 −9.2720E−04 −8.5760E−06

In the 8th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 8th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 15 and Table 16as the following values and satisfy the following conditions:

8th Embodiment f [mm] 2.02 (R11 + R12)/(R11 − R12) 1.58 Fno 2.10 R10/R11−0.18 HFOV [deg.] 44.9 f2/f3 0.10 (T12 + T23)/CT1 1.45 f4/f1 0.02T34/(T23 + T45) 0.05 f6/f5 −0.32 T12/f 0.19 f6/f1 −0.02 CTmax/ATmax 1.41Y11/Y62 0.68 ATmax/CTmin 1.59 SD/TD 0.73 ATmax/ImgH 0.19 TD/Yc62 3.35(R1 − R2)/(R1 + R2) −0.04 TL/f 2.08 (R7 + R8)/(R7 − R8) 7.11 tan(HFOV)1.00

9th Embodiment

FIG. 17 is a schematic view of an image capturing unit according to the9th embodiment of the present disclosure. FIG. 18 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 9thembodiment. In FIG. 17, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 990. The optical imaging lens assemblyincludes, in order from an object side to an image side, a first lenselement 910, an aperture stop 900, a second lens element 920, a thirdlens element 930, a fourth lens element 940, a fifth lens element 950, asixth lens element 960, an IR-cut filter 970 and an image surface 980,wherein the optical imaging lens assembly has a total of six lenselements (910-960).

The first lens element 910 with positive refractive power has anobject-side surface 911 being convex in a paraxial region thereof and animage-side surface 912 being convex in a paraxial region thereof. Thefirst lens element 910 is made of plastic material and has theobject-side surface 911 and the image-side surface 912 being bothaspheric. The image-side surface 912 of the first lens element 910 hasat least one inflection point.

The second lens element 920 with positive refractive power has anobject-side surface 921 being convex in a paraxial region thereof and animage-side surface 922 being concave in a paraxial region thereof. Thesecond lens element 920 is made of plastic material and has theobject-side surface 921 and the image-side surface 922 being bothaspheric.

The third lens element 930 with positive refractive power has anobject-side surface 931 being convex in a paraxial region thereof and animage-side surface 932 being convex in a paraxial region thereof. Thethird lens element 930 is made of plastic material and has theobject-side surface 931 and the image-side surface 932 being bothaspheric. The object-side surface 931 of the third lens element 930 hasat least one inflection point.

The fourth lens element 940 with positive refractive power has anobject-side surface 941 being concave in a paraxial region thereof andan image-side surface 942 being convex in a paraxial region thereof. Thefourth lens element 940 is made of plastic material and has theobject-side surface 941 and the image-side surface 942 being bothaspheric.

The fifth lens element 950 with positive refractive power has anobject-side surface 951 being concave in a paraxial region thereof andan image-side surface 952 being convex in a paraxial region thereof. Thefifth lens element 950 is made of plastic material and has theobject-side surface 951 and the image-side surface 952 being bothaspheric.

The sixth lens element 960 with negative refractive power has anobject-side surface 961 being convex in a paraxial region thereof and animage-side surface 962 being concave in a paraxial region thereof. Thesixth lens element 960 is made of plastic material and has theobject-side surface 961 and the image-side surface 962 being bothaspheric. The image-side surface 962 of the sixth lens element 960 hasat least one inflection point.

In this embodiment, as shown in Table 17, the sixth lens element 960 hasan Abbe number less than 30.

The IR-cut filter 970 is made of glass material and located between thesixth lens element 960 and the image surface 980, and will not affectthe focal length of the optical imaging lens assembly. The image sensor990 is disposed on or near the image surface 980 of the optical imaginglens assembly.

The detailed optical data of the 9th embodiment are shown in Table 17and Table 18 below.

TABLE 17 9th Embodiment f = 2.81 mm, Fno = 2.00, HFOV = 43.9 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Lens 1 7.814 (ASP) 0.459 Plastic 1.544 56.011.27 2 −27.895 (ASP) 0.253 3 Ape. Stop Plano −0.120 4 Lens2 1.948 (ASP)0.306 Plastic 1.544 56.0 8.47 5 3.188 (ASP) 0.345 6 Lens 3 280.250 (ASP)0.250 Plastic 1.530 55.8 12.39 7 −6.724 (ASP) 0.100 8 Lens 4 −2.844(ASP) 0.733 Plastic 1.544 56.0 2.34 9 −0.958 (ASP) 0.100 10 Lens 5−0.772 (ASP) 0.552 Plastic 1.535 55.8 6.38 11 −0.787 (ASP) 0.030 12 Lens6 3.294 (ASP) 0.633 Plastic 1.634 23.8 −2.20 13 0.907 (ASP) 0.550 14IR-cut filter Plano 0.210 Glass 1.517 64.2 — 15 Plano 0.403 16 ImagePlano — Note: Reference wavelength is 587.6 nm (d-line).

TABLE 18 Aspheric Coefficients Surface # 1 2 4 5 6 7 k = −2.1154E+01−5.0000E+01  8.1342E−02 −1.8995E+01 1.0000E+00  1.0000E+00 A4 =−5.2316E−03 1.1330E−02 −1.3613E−02   2.4942E−02 −2.9929E−01  −1.6880E−01A6 =  3.0817E−03 3.0045E−02 1.1190E−01 −5.4764E−01 4.3146E−01 4.0766E−01 A8 =  8.1166E−03 1.4515E−02 −1.8261E−01   1.9860E+00−3.4614E+00  −1.0391E+00 A10 =  4.9444E−03 3.0274E−02 1.8946E−01−5.0755E+00 9.0913E+00  1.5235E+00 A12 = −1.9391E−03 9.0698E−055.1214E−01  6.6490E+00 −1.4236E+01  −1.3777E+00 A14 = — — −8.4253E−01 −3.7835E+00 7.8660E+00 — Surface # 8 9 10 11 12 13 k = −1.0469E+01−3.5893E+00 −1.8846E+00 −3.5492E+00 −5.4824E+00 −4.8820E+00 A4 =−9.7654E−02 −5.0592E−01 −3.4496E−01 −3.9992E−01 −2.1583E−01 −8.9992E−02A6 =  1.8878E−01  1.0589E+00  1.2110E+00  6.5466E−01  6.5615E−02 3.4387E−02 A8 =  8.6735E−02 −1.1024E+00 −1.7534E+00 −7.8435E−01−1.5258E−02 −9.4753E−03 A10 = −3.6152E−01  4.7527E−01  1.4644E+00 6.0394E−01  2.3006E−03  1.2478E−03 A12 =  2.5437E−01 −5.0299E−02−7.8850E−01 −2.6604E−01 −8.8148E−04 −2.8093E−05 A14 = −6.4012E−02 — 2.7020E−01  6.0172E−02  1.8622E−04 −1.1218E−05 A16 = — — −4.3415E−02−5.2693E−03  2.9262E−05  1.0432E−06

In the 9th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 9th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 17 and Table 18as the following values and satisfy the following conditions:

9th Embodiment f [mm] 2.81 (R11 + R12)/(R11 − R12) 1.76 Fno 2.00 R10/R11−0.24 HFOV [deg.] 43.9 f2/f3 0.68 (T12 + T23)/CT1 1.04 f4/f1 0.21T34/(T23 + T45) 0.22 f6/f5 −0.35 T12/f 0.05 f6/f1 −0.20 CTmax/ATmax 2.12Y11/Y62 0.53 ATmax/CTmin 1.38 SD/TD 0.80 ATmax/ImgH 0.12 TD/Yc62 2.50(R1 − R2)/(R1 + R2) −1.78 TL/f 1.71 (R7 + R8)/(R7 − R8) 2.02 tan(HFOV)0.96

10th Embodiment

FIG. 19 is a schematic view of an image capturing unit according to the10th embodiment of the present disclosure. FIG. 20 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 10thembodiment. In FIG. 19, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 1090. The optical imaging lens assemblyincludes, in order from an object side to an image side, a first lenselement 1010, an aperture stop 1000, a second lens element 1020, a thirdlens element 1030, a fourth lens element 1040, a fifth lens element1050, a sixth lens element 1060, an IR-cut filter 1070 and an imagesurface 1080, wherein the optical imaging lens assembly has a total ofsix lens elements (1010-1060).

The first lens element 1010 with negative refractive power has anobject-side surface 1011 being convex in a paraxial region thereof andan image-side surface 1012 being concave in a paraxial region thereof.The first lens element 1010 is made of plastic material and has theobject-side surface 1011 and the image-side surface 1012 being bothaspheric.

The second lens element 1020 with positive refractive power has anobject-side surface 1021 being convex in a paraxial region thereof andan image-side surface 1022 being concave in a paraxial region thereof.The second lens element 1020 is made of plastic material and has theobject-side surface 1021 and the image-side surface 1022 being bothaspheric.

The third lens element 1030 with positive refractive power has anobject-side surface 1031 being concave in a paraxial region thereof andan image-side surface 1032 being convex in a paraxial region thereof.The third lens element 1030 is made of plastic material and has theobject-side surface 1031 and the image-side surface 1032 being bothaspheric. The image-side surface 1032 of the third lens element 1030 hasat least one inflection point.

The fourth lens element 1040 with positive refractive power has anobject-side surface 1041 being concave in a paraxial region thereof andan image-side surface 1042 being convex in a paraxial region thereof.The fourth lens element 1040 is made of plastic material and has theobject-side surface 1041 and the image-side surface 1042 being bothaspheric.

The fifth lens element 1050 with positive refractive power has anobject-side surface 1051 being concave in a paraxial region thereof andan image-side surface 1052 being convex in a paraxial region thereof.The fifth lens element 1050 is made of plastic material and has theobject-side surface 1051 and the image-side surface 1052 being bothaspheric.

The sixth lens element 1060 with negative refractive power has anobject-side surface 1061 being convex in a paraxial region thereof andan image-side surface 1062 being concave in a paraxial region thereof.The sixth lens element 1060 is made of plastic material and has theobject-side surface 1061 and the image-side surface 1062 being bothaspheric. The image-side surface 1062 of the sixth lens element 1060 hasat least one inflection point.

In this embodiment, as shown in Table 19, both the first lens element1010 and the sixth lens element 1060 have an Abbe number less than 30.

The IR-cut filter 1070 is made of glass material and located between thesixth lens element 1060 and the image surface 1080, and will not affectthe focal length of the optical imaging lens assembly. The image sensor1090 is disposed on or near the image surface 1080 of the opticalimaging lens assembly.

The detailed optical data of the 10th embodiment are shown in Table 19and Table 20 below.

TABLE 19 10th Embodiment f = 2.80 mm, Fno = 2.05, HFOV = 44.1 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Lens 1 3.777 (ASP) 0.621 Plastic 1.634 23.8−12.35 2 2.385 (ASP) 0.170 3 Ape. Stop Plano −0.120 4 Lens 2 1.670 (ASP)0.431 Plastic 1.544 56.0 3.72 5 8.635 (ASP) 0.315 6 Lens 3 −18.280 (ASP)0.251 Plastic 1.530 55.8 5.63 7 −2.578 (ASP) 0.100 8 Lens 4 −1.735 (ASP)0.579 Plastic 1.544 56.0 3.06 9 −0.949 (ASP) 0.100 10 Lens 5 −0.807(ASP) 0.612 Plastic 1.535 55.8 4.65 11 −0.771 (ASP) 0.030 12 Lens 62.469 (ASP) 0.596 Plastic 1.639 23.5 −2.27 13 0.828 (ASP) 0.550 14IR-cut filter Plano 0.210 Glass 1.517 64.2 — 15 Plano 0.512 16 ImagePlano — Note: Reference wavelength is 587.6 nm (d-line).

TABLE 20 Aspheric Coefficients Surface # 1 2 4 5 6 7 k = −3.9280E+00−3.6880E+00  −9.8984E−01 −5.0000E+01 1.0000E+00 1.0000E+00 A4 = 2.1411E−02 5.1158E−02 −3.9717E−02 −4.0661E−02 −3.2125E−01  −1.9220E−01 A6 =  7.9495E−03 1.0830E−01  1.8533E−01 −5.4123E−01 3.5969E−013.5078E−01 A8 = −5.1940E−03 −1.2123E−01  −3.7656E−01  1.8426E+00−3.4860E+00  −1.0708E+00  A10 =  4.7991E−03 3.4677E−01  2.8087E−01−5.2065E+00 8.9775E+00 1.6695E+00 A12 = −7.8517E−04 9.0698E−05 5.1214E−01  6.6490E+00 −1.4236E+01  −1.3783E+00  A14 = — — −8.4253E−01−3.7835E+00 7.8660E+00 5.2781E−01 Surface # 8 9 10 11 12 13 k =−4.2752E+00 −3.5814E+00 −1.9183E+00 −3.4935E+00 −1.5033E+00 −4.4539E+00A4 = −1.0616E−01 −4.7958E−01 −3.3643E−01 −3.9330E−01 −1.9515E−01−8.4148E−02 A6 =  2.1664E−01  1.0699E+00  1.2281E+00  6.5227E−01 5.6823E−02  3.1629E−02 A8 =  1.0763E−01 −1.1006E+00 −1.7421E+00−7.8565E−01 −1.6460E−02 −8.9972E−03 A10 = −3.7100E−01  4.7726E−01 1.4656E+00  6.0398E−01  2.3273E−03  1.2753E−03 A12 =  2.4863E−01−5.0907E−02 −7.9045E−01 −2.6561E−01 −6.2524E−04 −3.7641E−05 A14 =−6.4347E−02 —  2.6947E−01  6.0353E−02  2.4011E−04 −1.2037E−05 A16 = — —−4.3651E−02 −5.0462E−03 −3.1037E−06  1.1773E−06

In the 10th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 10th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 19 and Table 20as the following values and satisfy the following conditions:

10th Embodiment f [mm] 2.80 (R11 + R12)/(R11 − R12) 2.01 Fno 2.05R10/R11 −0.31 HFOV [deg.] 44.1 f2/f3 0.66 (T12 + T23)/CT1 0.59 f4/f1−0.25 T34/(T23 + T45) 0.24 f6/f5 −0.49 T12/f 0.02 f6/f1 0.18 CTmax/ATmax1.97 Y11/Y62 0.49 ATmax/CTmin 1.25 SD/TD 0.79 ATmax/ImgH 0.11 TD/Yc622.42 (R1 − R2)/(R1 + R2) 0.23 TL/f 1.77 (R7 + R8)/(R7 − R8) 3.42tan(HFOV) 0.97

11th Embodiment

FIG. 21 is a schematic view of an image capturing unit according to the11th embodiment of the present disclosure. FIG. 22 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 11thembodiment. In FIG. 21, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 1190. The optical imaging lens assemblyincludes, in order from an object side to an image side, a first lenselement 1110, an aperture stop 1100, a second lens element 1120, a thirdlens element 1130, a fourth lens element 1140, a fifth lens element1150, a sixth lens element 1160, an IR-cut filter 1170 and an imagesurface 1180, wherein the optical imaging lens assembly has a total ofsix lens elements (1110-1160).

The first lens element 1110 with positive refractive power has anobject-side surface 1111 being convex in a paraxial region thereof andan image-side surface 1112 being convex in a paraxial region thereof.The first lens element 1110 is made of plastic material and has theobject-side surface 1111 and the image-side surface 1112 being bothaspheric. The object-side surface 1111 of the first lens element 1110has at least one inflection point.

The second lens element 1120 with positive refractive power has anobject-side surface 1121 being convex in a paraxial region thereof andan image-side surface 1122 being concave in a paraxial region thereof.The second lens element 1120 is made of plastic material and has theobject-side surface 1121 and the image-side surface 1122 being bothaspheric.

The third lens element 1130 with positive refractive power has anobject-side surface 1131 being convex in a paraxial region thereof andan image-side surface 1132 being concave in a paraxial region thereof.The third lens element 1130 is made of plastic material and has theobject-side surface 1131 and the image-side surface 1132 being bothaspheric. Both the object-side surface 1131 and the image-side surface1132 of the third lens element 1130 have at least one inflection point.

The fourth lens element 1140 with positive refractive power has anobject-side surface 1141 being convex in a paraxial region thereof andan image-side surface 1142 being convex in a paraxial region thereof.The fourth lens element 1140 is made of plastic material and has theobject-side surface 1141 and the image-side surface 1142 being bothaspheric.

The fifth lens element 1150 with positive refractive power has anobject-side surface 1151 being concave in a paraxial region thereof andan image-side surface 1152 being convex in a paraxial region thereof.The fifth lens element 1150 is made of plastic material and has theobject-side surface 1151 and the image-side surface 1152 being bothaspheric.

The sixth lens element 1160 with negative refractive power has anobject-side surface 1161 being convex in a paraxial region thereof andan image-side surface 1162 being concave in a paraxial region thereof.The sixth lens element 1160 is made of plastic material and has theobject-side surface 1161 and the image-side surface 1162 being bothaspheric. The image-side surface 1162 of the sixth lens element 1160 hasat least one inflection point.

In this embodiment, as shown in Table 21, both the second lens element1120 and the fifth lens element 1150 have an Abbe number less than 30.

The IR-cut filter 1170 is made of glass material and located between thesixth lens element 1160 and the image surface 1180, and will not affectthe focal length of the optical imaging lens assembly. The image sensor1190 is disposed on or near the image surface 1180 of the opticalimaging lens assembly.

The detailed optical data of the 11th embodiment are shown in Table 21and Table 22 below.

TABLE 21 11th Embodiment f = 3.88 mm, Fno = 2.30, HFOV = 36.8 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Lens 1 7.803 (ASP) 0.495 Plastic 1.535 56.313.84 2 −139.860 (ASP) 0.050 3 Ape. Stop Plano 0.050 4 Lens 2 2.346(ASP) 0.283 Plastic 1.650 21.4 75.42 5 2.347 (ASP) 0.283 6 Lens 3 1.624(ASP) 0.244 Plastic 1.535 55.8 70.80 7 1.607 (ASP) 0.381 8 Lens 4 8.351(ASP) 0.885 Plastic 1.535 55.8 3.64 9 −2.441 (ASP) 0.085 10 Lens 5−1.135 (ASP) 0.522 Plastic 1.639 23.3 54.04 11 −1.296 (ASP) 0.050 12Lens 6 1.565 (ASP) 0.681 Plastic 1.535 55.8 −8.39 13 0.984 (ASP) 0.80014 IR-cut filter Plano 0.200 Glass 1.517 64.2 — 15 Plano 0.848 16 ImagePlano — Note: Reference wavelength is 587.6 nm (d-line).

TABLE 22 Aspheric Coefficients Surface # 1 2 4 5 6 7 k =  3.0897E+00−3.0000E+01 −5.7514E+00 9.1138E−01 −1.5011E+00 −3.4525E+00 A4 =−3.0217E−03 −4.7732E−02 −3.8831E−02 −1.2361E−01  −1.6271E−01 −5.8742E−02A6 = −5.6093E−03  5.1736E−03 −1.2000E−02 2.3761E−02  2.2239E−02−5.4530E−02 A8 = −2.9664E−04  1.9692E−03 −2.8990E−02 −3.6710E−02 −3.3206E−02  1.4242E−02 A10 = −5.2981E−04 −9.9889E−03  2.8473E−021.6205E−02  3.7367E−02  2.2280E−02 A12 = −1.0295E−03  3.0856E−03−1.5751E−02 6.9332E−03 −1.0025E−02 −2.3940E−02 A14 = — —  1.2217E−03−2.7924E−03  −2.2734E−04  5.9007E−03 Surface # 8 9 10 11 12 13 k = 1.7476E+01 5.4796E−01 −3.9688E+00  −3.3830E+00  −1.4825E+00 −3.7596E+00A4 =  4.5126E−04 −2.4680E−02  1.9514E−02 1.9971E−02 −2.2097E−01−7.6881E−02 A6 = −3.3030E−02 −2.7055E−03  6.4763E−03 6.1736E−02 1.2550E−01  3.6423E−02 A8 =  2.8137E−02 1.8676E−02 2.6813E−02−4.0343E−02  −6.1807E−02 −1.4689E−02 A10 = −1.8807E−02 −1.3857E−02 −3.8521E−02  1.6839E−02  2.1430E−02  3.9365E−03 A12 = −4.2174E−052.1783E−03 1.9476E−02 −4.2732E−03  −4.3671E−03 −6.5027E−04 A14 = 4.2958E−03 1.2403E−03 −3.9469E−03  4.3026E−04  4.6971E−04  5.9454E−05A16 = −8.8203E−04 — 1.7209E−04 1.2278E−06 −2.0727E−05 −2.2797E−06

In the 11th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 11th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 21 and Table 22as the following values and satisfy the following conditions:

11th Embodiment f [mm] 3.88 (R11 + R12)/(R11 − R12) 4.39 Fno 2.30R10/R11 −0.83 HFOV [deg.] 36.8 f2/f3 1.07 (T12 + T23)/CT1 0.77 f4/f10.26 T34/(T23 + T45) 1.04 f6/f5 −0.16 T12/f 0.03 f6/f1 −0.61 CTmax/ATmax2.32 Y11/Y62 0.46 ATmax/CTmin 1.56 SD/TD 0.86 ATmax/ImgH 0.13 TD/Yc622.25 (R1 − R2)/(R1 + R2) −1.12 TL/f 1.51 (R7 + R8)/(R7 − R8) 0.55tan(HFOV) 0.75

12th Embodiment

FIG. 23 is a schematic view of an image capturing unit according to the12th embodiment of the present disclosure. FIG. 24 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 12thembodiment. In FIG. 23, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 1290. The optical imaging lens assemblyincludes, in order from an object side to an image side, a first lenselement 1210, an aperture stop 1200, a second lens element 1220, a thirdlens element 1230, a fourth lens element 1240, a fifth lens element1250, a sixth lens element 1260, an IR-cut filter 1270 and an imagesurface 1280, wherein the optical imaging lens assembly has a total ofsix lens elements (1210-1260).

The first lens element 1210 with negative refractive power has anobject-side surface 1211 being convex in a paraxial region thereof andan image-side surface 1212 being concave in a paraxial region thereof.The first lens element 1210 is made of plastic material and has theobject-side surface 1212 and the image-side surface 1212 being bothaspheric. The object-side surface 1211 of the first lens element 1210has at least one inflection point.

The second lens element 1220 with positive refractive power has anobject-side surface 1221 being convex in a paraxial region thereof andan image-side surface 1222 being concave in a paraxial region thereof.The second lens element 1220 is made of plastic material and has theobject-side surface 1221 and the image-side surface 1222 being bothaspheric.

The third lens element 1230 with positive refractive power has anobject-side surface 1231 being convex in a paraxial region thereof andan image-side surface 1232 being concave in a paraxial region thereof.The third lens element 1230 is made of plastic material and has theobject-side surface 1231 and the image-side surface 1232 being bothaspheric. Both the object-side surface 1231 and the image-side surface1232 of the third lens element 1230 have at least one inflection point.

The fourth lens element 1240 with positive refractive power has anobject-side surface 1241 being convex in a paraxial region thereof andan image-side surface 1242 being concave in a paraxial region thereof.The fourth lens element 1240 is made of plastic material and has theobject-side surface 1241 and the image-side surface 1242 being bothaspheric.

The fifth lens element 1250 with positive refractive power has anobject-side surface 1251 being convex in a paraxial region thereof andan image-side surface 1252 being convex in a paraxial region thereof.The fifth lens element 1250 is made of plastic material and has theobject-side surface 1251 and the image-side surface 1252 being bothaspheric.

The sixth lens element 1260 with negative refractive power has anobject-side surface 1261 being concave in a paraxial region thereof andan image-side surface 1262 being concave in a paraxial region thereof.The sixth lens element 1260 is made of plastic material and has theobject-side surface 1261 and the image-side surface 1262 being bothaspheric. The image-side surface 1262 of the sixth lens element 1260 hasat least one inflection point.

In this embodiment, as shown in Table 23, the first lens element 1210,the third lens element 1230, the fifth lens element 1250 and the sixthlens element 1260 all have an Abbe number less than 30.

The IR-cut filter 1270 is made of glass material and located between thesixth lens element 1260 and the image surface 1280, and will not affectthe focal length of the optical imaging lens assembly. The image sensor1290 is disposed on or near the image surface 1280 of the opticalimaging lens assembly.

The detailed optical data of the 12th embodiment are shown in Table 23and Table 24 below.

TABLE 23 12th Embodiment f = 3.69 mm, Fno = 2.25, HFOV = 38.9 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Lens 1 4.597 (ASP) 0.449 Plastic 1.640 23.3−11.41 2 2.714 (ASP) 0.100 3 Ape. Stop Plano 0.029 4 Lens 2 1.900 (ASP)0.616 Plastic 1.544 55.9 3.77 5 23.088 (ASP) 0.153 6 Lens 3 1.983 (ASP)0.213 Plastic 1.640 23.3 35.14 7 2.084 (ASP) 0.680 8 Lens 4 12.498 (ASP)0.450 Plastic 1.544 55.9 64.09 9 19.231 (ASP) 0.214 10 Lens 5 8.377(ASP) 0.735 Plastic 1.640 23.3 1.72 11 −1.223 (ASP) 0.122 12 Lens 6−8.294 (ASP) 0.344 Plastic 1.640 23.3 −1.35 13 0.982 (ASP) 0.550 14IR-cut filter Plano 0.195 Glass 1.517 64.2 — 15 Plano 0.398 16 ImagePlano — Note: Reference wavelength is 587.6 nm (d-line).

TABLE 24 Aspheric Coefficients Surface # 1 2 4 5 6 7 k = −1.5304E+01−6.6318E+00 −1.6852E+00 −3.0000E+01 −1.8831E+00 −3.2577E+00 A4 =−2.6308E−02 −5.6497E−02 −1.9313E−02 −1.0363E−01 −1.9177E−01 −9.1807E−02A6 = −3.7242E−04 −2.8739E−03 −7.6546E−03  6.5679E−02  7.5881E−03−6.4161E−02 A8 =  4.4041E−03  3.0564E−02 −7.4821E−04 −1.0280E−01−6.1294E−02  2.6505E−02 A10 =  6.8321E−04 −5.8183E−03 −5.8926E−04 3.8713E−02  5.5757E−02  3.3994E−02 A12 = −7.5430E−04 −4.0024E−03−2.5146E−04  1.0061E−02  2.1093E−03 −2.2445E−02 A14 = — — −6.2893E−03−1.1098E−02 −4.9023E−03  4.3913E−03 Surface # 8 9 10 11 12 13 k = 1.9446E+01 −3.0000E+01  −1.8740E+01 −8.5467E+00 −2.4745E+01 −6.9875E+00A4 = −2.3160E−02 −1.2021E−01  −7.9450E−02 −6.8306E−02 −1.8560E−01−9.8455E−02 A6 = −2.2396E−02 8.3615E−03 −2.2903E−02  8.2573E−02 1.2646E−01  5.2774E−02 A8 =  3.0031E−02 1.1464E−02  6.0398E−02−5.2199E−02 −6.7787E−02 −2.1198E−02 A10 = −2.5402E−02 −1.5147E−02 −6.1923E−02  2.1977E−02  2.6838E−02  5.4670E−03 A12 =  2.2745E−043.6357E−03  2.5556E−02 −5.3073E−03 −5.9334E−03 −8.7101E−04 A14 = 6.3339E−03 9.9384E−04 −2.8326E−03  6.3643E−04  6.3013E−04  7.6494E−05A16 = −1.4175E−03 — −4.5197E−04 −2.9927E−05 −2.5128E−05 −2.7817E−06

In the 12th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 12th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 23 and Table 24as the following values and satisfy the following conditions:

12th Embodiment f [mm] 3.69 (R11 + R12)/(R11 − R12) 0.79 Fno 2.25R10/R11 0.15 HFOV [deg.] 38.9 f2/f3 0.11 (T12 + T23)/CT1 0.63 f4/f1−5.62 T34/(T23 + T45) 1.85 f6/f5 −0.79 T12/f 0.03 f6/f1 0.12 CTmax/ATmax1.08 Y11/Y62 0.43 ATmax/CTmin 3.19 SD/TD 0.87 ATmax/ImgH 0.23 TD/Yc622.89 (R1 − R2)/(R1 + R2) 0.26 TL/f 1.42 (R7 + R8)/(R7 − R8) −4.71tan(HFOV) 0.81

The foregoing description, for the purpose of explanation, has beendescribed with reference to specific embodiments. It is to be noted thatTABLES 1-24 show different data of the different embodiments; however,the data of the different embodiments are obtained from experiments. Theembodiments were chosen and described in order to best explain theprinciples of the disclosure and its practical applications, to therebyenable others skilled in the art to best utilize the disclosure andvarious embodiments with various modifications as are suited to theparticular use contemplated. The embodiments depicted above and theappended drawings are exemplary and are not intended to be exhaustive orto limit the scope of the present disclosure to the precise formsdisclosed. Many modifications and variations are possible in view of theabove teachings.

What is claimed is:
 1. An optical imaging lens assembly comprising sixlens elements, the six lens elements being, in order from an object sideto an image side: a first lens element, a second lens element, a thirdlens element, a fourth lens element, a fifth lens element and a sixthlens element; each of the six lens elements having an object-sidesurface facing toward the object side and an image-side surface facingtoward the image side; wherein the object-side surface of the first lenselement is concave in a paraxial region thereof, the object-side surfaceof the third lens element is convex in a paraxial region thereof, theimage-side surface of the third lens element is concave in a paraxialregion thereof, the image-side surface of the sixth lens element isconcave in a paraxial region thereof, the image-side surface of thesixth lens element is aspheric and has at least one inflection point,and each of at least two of the six lens elements of the optical imaginglens assembly has an Abbe number less than 30; wherein an axial distancebetween the object-side surface of the first lens element and an imagesurface is TL, a focal length of the optical imaging lens assembly is f,a curvature radius of the object-side surface of the fourth lens elementis R7, a curvature radius of the image-side surface of the fourth lenselement is R8, and the following conditions are satisfied:1.53≤TL/f<2.85; and0<(R7+R8)/(R7−R8)≤1.13.
 2. The optical imaging lens assembly of claim 1,wherein at least one of the object-side surface and the image-sidesurface of the first lens element has at least one inflection point, andthe sixth lens element has negative refractive power.
 3. The opticalimaging lens assembly of claim 1, wherein the object-side surface of thesixth lens element is convex in a paraxial region thereof.
 4. Theoptical imaging lens assembly of claim 1, wherein the image-side surfaceof the fourth lens element is convex in a paraxial region thereof, andeach of the six lens elements of the optical imaging lens assembly is asingle and non-cemented lens element.
 5. The optical imaging lensassembly of claim 1, further comprising an aperture stop disposedbetween the first lens element and the third lens element, wherein atleast one lens surface among the object-side surfaces and the image-sidesurfaces of the first lens element, the second lens element, the thirdlens element, the fourth lens element and the fifth lens element isaspheric, and at least one of the object-side surface and the image-sidesurface of the third lens element has at least one inflection point. 6.The optical imaging lens assembly of claim 1, wherein a focal length ofthe first lens element is f1, a focal length of the sixth lens elementis f6, and the following condition is satisfied:−5.0<f6/f1<0.50.
 7. The optical imaging lens assembly of claim 1,wherein a central thickness of the first lens element is smaller than acentral thickness of the second lens element.
 8. An optical imaging lensassembly comprising six lens elements, the six lens elements being, inorder from an object side to an image side: a first lens element, asecond lens element, a third lens element, a fourth lens element, afifth lens element and a sixth lens element; each of the six lenselements having an object-side surface facing toward the object side andan image-side surface facing toward the image side; wherein theobject-side surface of the first lens element is concave in a paraxialregion thereof, the object-side surface of the third lens element isconvex in a paraxial region thereof, the image-side surface of the thirdlens element is concave in a paraxial region thereof, the image-sidesurface of the sixth lens element is concave in a paraxial regionthereof, the image-side surface of the sixth lens element is asphericand has at least one inflection point, each of at least two of the sixlens elements of the optical imaging lens assembly has an Abbe numberless than 30, and a central thickness of the fourth lens element islarger than a central thickness of the fifth lens element; wherein anaxial distance between the object-side surface of the first lens elementand an image surface is TL, a focal length of the optical imaging lensassembly is f, and the following condition is satisfied:1.53≤TL/f<2.85.
 9. The optical imaging lens assembly of claim 8, whereinthe first lens element has negative refractive power, and theobject-side surface of the second lens element is convex in a paraxialregion thereof.
 10. The optical imaging lens assembly of claim 8,wherein the object-side surface of the fourth lens element is convex ina paraxial region thereof.
 11. The optical imaging lens assembly ofclaim 8, wherein a maximum effective radius of the object-side surfaceof the first lens element is Y11, a maximum effective radius of theimage-side surface of the sixth lens element is Y62, and the followingcondition is satisfied:Y11/Y62<0.90.
 12. The optical imaging lens assembly of claim 8, whereinat least one of the object-side surface and the image-side surface ofthe first lens element has at least one inflection point, a focal lengthof the first lens element is f1, a focal length of the fourth lenselement is f4, and the following condition is satisfied:−0.80<f4/f1.
 13. The optical imaging lens assembly of claim 8, whereinan axial distance between the object-side surface of the first lenselement and the image-side surface of the sixth lens element is TD, avertical distance between a non-axial critical point on the image-sidesurface of the sixth lens element and an optical axis is Yc62, and thefollowing condition is satisfied:1.0<TD/Yc62<4.0.
 14. The optical imaging lens assembly of claim 8,wherein an axial distance between the fourth lens element and the fifthlens element is larger than an axial distance between the fifth lenselement and the sixth lens element.
 15. An optical imaging lens assemblycomprising six lens elements, the six lens elements being, in order froman object side to an image side: a first lens element, a second lenselement, a third lens element, a fourth lens element, a fifth lenselement and a sixth lens element; each of the six lens elements havingan object-side surface facing toward the object side and an image-sidesurface facing toward the image side; wherein the object-side surface ofthe first lens element is concave in a paraxial region thereof, thesecond lens element has positive refractive power, the image-sidesurface of the sixth lens element is concave in a paraxial regionthereof, the image-side surface of the sixth lens element is asphericand has at least one inflection point, each of at least two of the sixlens elements of the optical imaging lens assembly has an Abbe numberless than 30, and an absolute value of a focal length of the fourth lenselement is a minimum among absolute values of focal lengths of the sixlens elements; wherein an axial distance between the object-side surfaceof the first lens element and an image surface is TL, a focal length ofthe optical imaging lens assembly is f, and the following condition issatisfied:1.53≤TL/f<2.85.
 16. The optical imaging lens assembly of claim 15,wherein the object-side surface of the third lens element is convex in aparaxial region thereof, and the image-side surface of the third lenselement is concave in a paraxial region thereof.
 17. The optical imaginglens assembly of claim 15, wherein the object-side surface of the sixthlens element is convex in a paraxial region thereof.
 18. The opticalimaging lens assembly of claim 15, wherein the fourth lens element haspositive refractive power, and the image-side surface of the fourth lenselement is convex in a paraxial region thereof.
 19. The optical imaginglens assembly of claim 15, wherein a maximum central thickness among allcentral thicknesses of the lens elements of the optical imaging lensassembly is CTmax, a maximum axial distance among all axial distancesbetween adjacent lens elements of the optical imaging lens assembly isATmax, and the following condition is satisfied:1.1<CTmax/ATmax<5.0.
 20. The optical imaging lens assembly of claim 15,wherein an axial distance between the first lens element and the secondlens element is T12, the focal length of the optical imaging lensassembly is f, and the following condition is satisfied:0<T12/f<0.10.
 21. An optical imaging lens assembly comprising six lenselements, the six lens elements being, in order from an object side toan image side: a first lens element, a second lens element, a third lenselement, a fourth lens element, a fifth lens element and a sixth lenselement; each of the six lens elements having an object-side surfacefacing toward the object side and an image-side surface facing towardthe image side; wherein the object-side surface of the first lenselement is concave in a paraxial region thereof, the image-side surfaceof the sixth lens element is concave in a paraxial region thereof, theimage-side surface of the sixth lens element is aspheric and has atleast one inflection point, each of at least two of the six lenselements of the optical imaging lens assembly has an Abbe number lessthan 30, and an axial distance between the first lens element and thesecond lens element is a maximum among all axial distances betweenadjacent lens elements of the optical imaging lens assembly; wherein anaxial distance between the object-side surface of the first lens elementand an image surface is TL, a focal length of the optical imaging lensassembly is f, a maximum effective radius of the object-side surface ofthe first lens element is Y11, a maximum effective radius of theimage-side surface of the sixth lens element is Y62, and the followingconditions are satisfied:0.70<TL/f<2.85; andY11/Y62<0.90.
 22. The optical imaging lens assembly of claim 21, whereinthe object-side surface of the sixth lens element is convex in aparaxial region thereof.
 23. The optical imaging lens assembly of claim21, wherein at least one of the object-side surface and the image-sidesurface of the first lens element has at least one inflection point, andthe sixth lens element has negative refractive power.
 24. The opticalimaging lens assembly of claim 21, wherein the image-side surface of thefifth lens element is convex in a paraxial region thereof.
 25. Theoptical imaging lens assembly of claim 21, wherein a maximum axialdistance among all axial distances between adjacent lens elements of theoptical imaging lens assembly is ATmax, a minimum central thicknessamong all central thicknesses of the lens elements of the opticalimaging lens assembly is CTmin, and the following condition issatisfied:ATmax/CTmin<2.0.
 26. The optical imaging lens assembly of claim 21,wherein each of the six lens elements of the optical imaging lensassembly is a single and non-cemented lens element, an axial distancebetween the object-side surface of the first lens element and theimage-side surface of the sixth lens element is TD, a vertical distancebetween a non-axial critical point on the image-side surface of thesixth lens element and an optical axis is Yc62, and the followingcondition is satisfied:1.0<TD/Yc62<4.0.
 27. The optical imaging lens assembly of claim 21,further comprising an aperture stop disposed between the first lenselement and the second lens element.
 28. The optical imaging lensassembly of claim 21, wherein an absolute value of a focal length of thesecond lens element is smaller than an absolute value of a focal lengthof the third lens element.
 29. The optical imaging lens assembly ofclaim 21, wherein a curvature radius of the object-side surface of thethird lens element and a curvature radius of the image-side surface ofthe third lens element are both positive or both negative.
 30. An imagecapturing unit, comprising: the optical imaging lens assembly of claim21; and an image sensor, wherein the image sensor is disposed on theimage surface of the optical imaging lens assembly.
 31. An electronicdevice, comprising: the image capturing unit of claim
 30. 32. An opticalimaging lens assembly comprising six lens elements, the six lenselements being, in order from an object side to an image side: a firstlens element, a second lens element, a third lens element, a fourth lenselement, a fifth lens element and a sixth lens element; each of the sixlens elements having an object-side surface facing toward the objectside and an image-side surface facing toward the image side; wherein theobject-side surface of the first lens element is concave in a paraxialregion thereof, the image-side surface of the sixth lens element isconcave in a paraxial region thereof, the image-side surface of thesixth lens element is aspheric and has at least one inflection point,each of at least two of the six lens elements of the optical imaginglens assembly has an Abbe number less than 30, and an axial distancebetween the first lens element and the second lens element is a maximumamong all axial distances between adjacent lens elements of the opticalimaging lens assembly; wherein the optical imaging lens assembly furthercomprises an aperture stop, an axial distance between the object-sidesurface of the first lens element and an image surface is TL, a focallength of the optical imaging lens assembly is f, an axial distancebetween the aperture stop and the image-side surface of the sixth lenselement is SD, an axial distance between the object-side surface of thefirst lens element and the image-side surface of the sixth lens elementis TD, and the following conditions are satisfied:0.70<TL/f<2.85; and0.65<SD/TD.
 33. The optical imaging lens assembly of claim 32, whereinat least one of the object-side surface and the image-side surface ofthe third lens element has at least one inflection point, and the fifthlens element has positive refractive power.
 34. The optical imaging lensassembly of claim 32, wherein each of the six lens elements of theoptical imaging lens assembly is a single and non-cemented lens element,the axial distance between the object-side surface of the first lenselement and the image surface is TL, the focal length of the opticalimaging lens assembly is f, and the following condition is satisfied:0.70<TL/f<2.45.
 35. The optical imaging lens assembly of claim 32,wherein each of at least three of the six lens elements of the opticalimaging lens assembly has an Abbe number less than
 30. 36. The opticalimaging lens assembly of claim 32, wherein an absolute value of a focallength of the second lens element is a minimum among absolute values offocal lengths of the six lens elements of the optical imaging lensassembly.
 37. The optical imaging lens assembly of claim 32, wherein anaxial distance between the fifth lens element and the sixth lens elementis smaller than an axial distance between the second lens element andthe third lens element.